Serological pipettes are more accurate as the smallest increment.
What is the difference between serological pipettes and micropipette?Pipettes and micropipette are invaluable pieces of laboratory equipment used to draw up , measures and deliver accurate volume of liquid. The difference between the two is that micropipette measures between 1 and 100μl , while pipettes generally start at 1 mili liter.
Serological pipettes ,each has clear ascending and descending graduation marked on the side. This accurate measurement when dispensing or aspirating.
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Principles of Ecology
NEW VOCABULARY
autotroph
biomass
carnivore
detritivore
food chain
food web
herbivore
heterotroph
omnivore
trophic level
Caden Holm a
yoad
Use your book to fill in vocabulary terms in this paragraph about
food chains.
In a
, matter and energy move from
. A food chain is made of several steps; each organism
in the food chain represents a step called a
A(n)
to
is a heterotroph that eats only plants, whereas a
preys on other heterotrophs. A(n)
plants and animals. Nutrients are returned to the soil, air, and water by
A model that shows all the possible feeding
relationships at each trophic level is called a
If you were a
scientist and you wanted to determine the weight of living matter at a
certain trophic level, you would measure the
eats both
A trophic web is an interaction between different organisms in which energy transference occurs. 1) food chain, 2) autotroph, 3) heterotroph, 4) trophic level, 5) herbivore, 6) carnivore, 7) omnivore, 8) detritivore, 9) food web, 10) biomass.
What is a trophic web?
The trophic web is the interaction between different organisms involving the transference of energy when some of them feed on the other ones.
Organisms occupy different trophic levels in the web. The ones placed at lower levels pass energy to the ones at the higher levels.
Organisms at each level feed on the preceding one and become food for the next one.
The first link corresponds to a producer organism -autotroph-.The following links are the consumers -heterotrophs-: herbivores and carnivores.The last links are the decomposers that degrade organic matter from dead organisms.A trophic web is composed of different food chains. Several food chains interconnected create a trophic web (food web).
Because it is a web, all organisms are in equilibrium until a change occurs. When a sudden change affects any of the involved links, there can be a cascade effect on the web.
In a (1) food chain , matter and energy move from (2) autotroph to (3) heterotroph .A food chain is made of several steps; each organism in the food chain represents a step called a (4) trophic level . A(n) (5) herbivore is a heterotroph that eats only plants, whereas a (6) carnivore preys on other heterotrophs. A(n) (7) omnivore eats both plants and animals. Nutrients are returned to the soil, air, and water by (8) detritivore .A model that shows all the possible feeding relationships at each trophic level is called a (9) food web .If you were a scientist and you wanted to determine the weight of living matter at a certain trophic level, you would measure the (10) biomass .You can learn more about trophic webs at
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Complete question
Use your book to fill in vocabulary terms in this paragraph about food chains.
In a (1) , matter and energy move from (2) to (3) .
A food chain is made of several steps; each organism in the food chain represents a step called a (4) .
A(n) (5) is a heterotroph that eats only plants, whereas a (6)
preys on other heterotrophs.
A(n) (7) eats both plants and animals.
Nutrients are returned to the soil, air, and water by (8) .
A model that shows all the possible feeding relationships at each trophic level is called a (9) .
If you were a scientist and you wanted to determine the weight of living matter at a certain trophic level, you would measure the (10) .
Terms
autotrophbiomasscarnivoredetritivorefood chainfood webherbivoreheterotrophomnivoretrophic levelIn which type of columnar epithelia are the nuclei not aligned at the basal end of the cell?
Pseudostratified columnar epithelia are the nuclei not aligned at the basal end of the cell.
The pseudostratified columnar epithelium is the tissue of cells composed of a single layer in direct contact with the basement membrane. The location of nuclei in the cells gives it a pseudo-appearance. Hence, it is called the pseudostratified columnar epithelium. The nuclei in these cells are located near the base of the cell and not at the base of the cell called the basal end of the cell.
An epithelium tissue is composed of epithelium cells packed closely with each other and remain attached to the basement membrane. They have cell junctions at the fusion points. The position of nuclei in a cell determines the striations in a layer. The nuclei in pseudostratified columnar epithelia are placed at different sites in a cell that gives it a striated appearance.
If the nuclei are aligned at the base of the cell, the layer doesn't appear striated. But the nuclei in pseudostratified columnar epithelia are arranged in a way that the cells appear to be of varying heights. This means that the nuclei in pseudostratified columnar epithelia are not aligned at the basal end of the cell.
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Which statement is most accurate about thee evolution of modern camels?
A. Camels and vicuñas likely have extremely different dna sequence if compared
B. Camels and vicuñas, and guanacos evolved in North America 40million years ago and then migrated to different parts of the world.
C. Camels, llamas, vicuñas and guanacos do not have a common ancestor
D. As a common ancestor of camels, llamas, vicuñas, and Guanacos migrated out from North America, population evolved over time to adapt to their new environments.
The most accurate statement about the evolution of modern camels is that as a common ancestor of camels, llamas, vicuñas, and Guanacos migrated out from North America and evolved over time.
What is Evolution?This is referred to as the changes in heritable features of an organism over successive generations and is usually passed as a trait from the parent to offspring.
Camels, llamas, Vicuñas, and Guanacos had common ancestors which migrated out from North America. They however went through evolutionary processes so as to aid them adapt to their new environments.
This is therefore the reason why option D was chosen as the most appropriate choice.
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Causal experiments may be used to test predictions. these predictions may be used to refine physical models. these physical models may be used to develop explanations of natural events. true false
The given statement is true that Causal experiments may be used to test predictions, these predictions may be used to refine physical models and these physical models may be used to develop explanations of natural events.
Scientific studies are used to test hypothesis . These hypothesis tests are used to refine models and These models are then used to develop explanations.
A hypothesis is idea about how something works that can be tested using experiments. A prediction is what will happen in an experiment if the hypothesis is correct.
Hypothesis is a statement that is capable of being falsified (capable of being shown to be wrong or incorrect). It is not a question.Scientific method-There is no such thing as a "scientific method"; there are only multiple and different ways of generating evidence-based understanding.Model- It is a tool (physical, conceptual, or mathematical) used to advance the scientific understanding of a phenomenon by the use of the tool.learn more about prediction and hypothesis here-
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How does sitting close to a large window in the winter (especially if it is after dark) affect your thermal comfort?
The nearby air is cooled by the cold window surfaces. Warmer air is subsequently displaced by the cooler air that then descends and is cooled by the window, and so on.
How does thermal comfort change with air temperature?Moving air can enhance heat loss by convection in warm or humid circumstances without changing the air's temperature. Air velocity may be adjusted to take a person's degree of physical activity into consideration as physical activity increases air movement.
How can I make my home more comfortable in the heat?Some potential options to improve thermal comfort while also reducing energy use include thick or well-insulated walls, appropriate apertures, screening systems, and outdoor areas (like courtyards) that give shade and natural ventilation.
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Using a resource without depleting it is known as.......
a. Recycling
b. Conservation
c. Sustainable development
d. Replacement time
Answer: conservation
Explanation:
During a trial involving a domestic violence claim, what type of demonstrative evidence would offer the most support to a witness's claims that the abuse was ongoing?
Blood found at the scene
A sketch of the crime scene
An x-ray showing multiple injuries received over time
A surveillance video showing the suspect entering the house
Answer: An x-ray showing multiple injuries received over time
Explanation:
This is an example of demonstrative evidence.
What is demonstrative evidence?: a kind of evidence that consists of objects, pictures, models, displays or other devices used in a trial hearing to support facts related to the crime.
p.s I also got it right on the test :)
An x-ray showing multiple injuries received over time would be offer the most support to a witness's claims that the abuse was ongoing.
Demonstrative evidence is evidence presented at the trial that is some kind of evidence that domestic violence happened or evidence of injuries. Demonstrative evidence is used to verify or clarify witness testimony. Examples of type of evidence include photographs, medical records such as x-ray ,videotapes, models, maps, graphs, computer graphics and animations. To admit demonstrative evidence at trial, the lawyer must call a competent witness—one having first-hand knowledge of the evidence at the relevant dates—to testify for the evidence . To be relevant, the evidence must help the jury understand some fact of consequence to the case.
Evidence Collection From Victim record of the injury, including descriptive and narrative notes that document the physical appearance, colour, size and orientation of the injury caused .
battered woman's syndrome- is the highly variable symptom complex of physical and psychological injuries exhibited by a woman repeatedly abused especially physically by her mate.
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If the scale of this map is 1 cm=600km. What is the distance between Chicago, Illinois and Beijing, China?
Answer:
10 629 kilometers or 5,739 nautical miles
Explanation:
im right
tundra how it moves with carbon through the hydrosphere ?
Tundra is one of the world's largest carbon dioxide sinks. In other words, when biomass (organic matter, including plant and animal) decomposes, it absorbs more carbon dioxide than it releases into the atmosphere.
What is the tundra doing with CO2?When plants photosynthesis, they absorb it together with sunshine and water. When their life cycle is complete and their remnants decay, they return it to the atmosphere.
These natural processes, however, are greatly hindered in the Arctic due to the freezing temperature.
What is the carbon cycle in the tundra?During the brief summer growing season, when plant photosynthesis and growth exceed carbon respired by plants and soil back to the atmosphere, northern tundra and boreal ecosystems often accumulate carbon (carbon sink) stored in plant biomass and new organic material.
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How a cellular structure of a white blood cells differs from the cellular structure of prokaryotes
Prokaryotic cells lack a nucleus and contain genetic material that is free to circulate about the cell, whereas eukaryotic cells have an unique nucleus that holds the cell's genetic material.
How do bacterial and eukaryotic cells differ in size and structure?A prokaryotic cell and a eukaryotic cell both have cytoplasm, ribosomes, and a plasma membrane. However, eukaryotic cells are frequently bigger than prokaryotic cells, contain a genuine nucleus (meaning that its DNA is enclosed by a membrane), and have extra membrane-bound organelles that allow effective compartmentalization.
The difference between bacterial and eukaryotic cells is the nucleus. Prokaryotic cells lack true nuclei, and only eukaryotic cells have organelles that are attached to membranes.
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The method by which you administer supplemental oxygen to a hypoxemic patient depends mostly on the:________
Oxygen is widely available and is often prescribed by medical and emergency medical personnel.
Properly administered, it can save lives, but oxygen is often administered without careful consideration of its potential benefits and side effects. There are definite indications for the method of administration. Inadequate dosing and lack of therapeutic monitoring can have serious consequences. Vigilant monitoring is essential to quickly identify and remediate adverse effects. A recent hospital survey found that 21% of oxygen prescriptions were inadequate and 85% of patients were inadequately monitored. Similar studies report that oxygen is improperly prescribed in general medicine.
To ensure safe and effective therapy, the prescription should cover flow rate, delivery system, duration, and therapy monitoring.
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Starch digestion begins in the __________ and protein digestion begins in the __________.
Answer: Mouth and Stomach
Explanation: In your mouth your saliva has enzymes called salivary amylase that begin breaking down things like starch to make it easier to be broken down later on in the body. Proteins begin being broken down into amino acids in the stomach by hydrochloric acid and enzymes called proteases.
Anthropologists begin to understand the adaptability of the human brain by studying.
Anthropologists study the brain of human by tracing the evolution of our lineage through the time in fossil record.
What is the anthropogical understanding of adaptation?Organisms respond to environmental challenges through a process called adaptation. In order to achieve personal objectives, human adaptation includes the interaction of biology and culture. The ability of humans to live in a wide variety of ecological niches makes them the most adaptable species on earth.
By tracing the evolution of our lineage through time in fossil record and provide a comparative perspective on human uniqueness by placing our species in the context that is how they studied the human brain.
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Sarah performs an experiment to determine the effect of nitrogen on plants. She studies the effect of nitrogen on the growth of the root hair, height of the plants, and nodule formation.which factor is an independent variable
The answer that is accurate is (a) Amount of Nitrogen.
The amount of nitrogen Sarah administers in this situation is an independent variable because it is not influenced by any other variables. However, the amount of nitrogen a plant receives affects its height as well as the development of nodules and roots. To guarantee that energy is available when and where the plant needs it to maximize output, nitrogen plays a crucial role within the plant. Even the roots contain this essential vitamin because proteins and enzymes control water and nutrient intake. Actually, the most crucial element for promoting plant growth is nitrogen. The chlorophyll molecule, which gives plants their green color, contains nitrogen. Nitrogen also plays a role in the plant's ability to produce nourishment.learn more about Nitrogen here: https://brainly.com/question/11483365
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observation when chlorine water and potassium chloride solution mix
There is no visible reaction when chlorine water and potassium chloride solution are mixed.
What is a displacement reaction?We know that a displacement reaction occurs when on atom or group of atoms in a compound is replaced by another atom or group of atoms. The reason why one ion could displace another from its aqueous solution is that the ions that is displacing another is higher in the electrochemical series.
In this case, a displacement does not occur because we are reacting chlorine water with potassium chloride solution. We can not see any kind of sign that a reaction has occurred.
Hence, we could conclude that there is no visible reaction when chlorine water and potassium chloride solution are mixed.
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What will happen to a salt
if attraction between a solute-solvent is equal to
the attraction of solute-solute
will it be soluble or insoluble or remain the same ?
testable question?
hypothesis?
independent variable?
dependent variable?
three controlled variables:
During an experiment, the researcher asks a question that can be tested to answer it. The researcher makes a hypothesis to explain what is expected to occur, and what is the relationship between variables.
Note: Since I could not find the complete question, I will provide definitions of the exposed terminology as a guide for you to find the answers.
What are testable question, hypothesis, and variables?Testable questions are the questions the researcher makes before conducting an experiment, and for which there is no answer yet.
It is a question the investigator can test to find its answer.
The hypothesis is a prediction the researcher makes as a potential explanation of what is going on or what is expected to occur. It expresses a direct relationship between the involved variables.
There are three types of variables in an experiment,
Independent variables are the ones that affect or influence other variables. The researcher modifies these variables on purpose to observe the changes they produce in other variables. Dependent variables are the ones affected by all the changes in the independent variables. They also change as the independent variable is modified. Controlled variables are all the other variables in which the researcher is not interested. They must be controlled and kept constant because they might affect the results.You can learn more about testable questions, hypothesis, and variables at
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HELP ASAP! ILL GIVE BRAINIEST IF YOUR RIGHT!
A researcher experimented with adhesives and glues to find new and stronger adhesives. In 1968, he discovered an adhesive that was very weak rather than strong. The adhesive would stick to paper but it could be removed easily without leaving a trace of adhesive. Because he was trying to find stronger adhesives, the results of that experiment were considered a failure. Several years later, he had the idea of coating paper with the weak adhesive. This meant that notes could be stuck to paper and easily removed at a later time. Today, these removable notes are used by millions of people.
Using the information in the paragraph above, answer the following question in essay format.
6. The original adhesive experiment was considered a failure. Appraise the importance of evaluating the results of an experiment with an open mind
Small pieces of paper with a light stickiness on the back are known as sticky notes, Post-it notes, or repositionable notes. The notes can be repeatedly taken from and reattached to a variety of surfaces and papers thanks to the adhesive.
Canary yellow, three-inch squares were the original form of post-it notes. Sticky notes are available in a wide range of sizes, shapes, and colours nowadays. Every day, people utilise sticky notes all across the world. People always carry and use sticky notes, whether they are at home, at work or in any other setting. Would you consider them to be a brilliant innovation that was created entirely by chance? It is real. Sticky notes were not intentionally invented. Instead, a chemist at 3M Company named Dr. Spencer Silver created a novel, low-tack adhesive in 1968 that could adhere to objects while simultaneously being moved around a number of times. Instead of the super-strong adhesive he was attempting to create, he created a super-weak one.
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HELPP ASPP U WILL GET BRAIBILEST AND 20 points I will report if u put just bunch of letters
Answer:
Muscular System - Enables the body to move using muscles.
Respiratory System - Brings air into and out of the lungs to absorb oxygen and remove carbon dioxide.
Circulatory System - Keeps the body's temperature in a safe range.
How far must a bimetallic stemmed thermometer be inserted into food to give an accurate reading?.
A bimetallic stemmed thermometer be inserted into food 2-3" far to give an accurate reading.
The probe of the bimetallic-coil thermometer needs to be inserted all the way into the sensor device for an accurate temperature reading "The probe should be inserted sideways with the sensing device in the exact center of the thin food being measured, such as boneless chicken breasts or hamburger patties.These gauge temperature using a resistor, which is a ceramic semiconductor glued in the tip using temperature-sensitive epoxy. The probe has a diameter of about 1/8 "thick and takes about 10 seconds for a digital display to display a temperature. Thermistors can detect temperature changes in thin foods because the semiconductor is located in the tip. The end of the cooking process is the best moment to use thermistors, just like with bimetal instant read thermometers.Therefore, the correct answer is 2-3".
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Keys...
All changes saved
3. Alise is interested in finding out which laundry detergent would best
keep her black jeans from fading. She has purchased four different
detergents that all claim to reduce fading. She has purchased one pair
of black jeans and cut them into four equally sized pieces. After
conducting research, Alise has hypothesized that detergent #3 will
maintain the black color of her jeans. After experimentation, detergent
#3 showed the best results. What would you recommend that Alise do
next?
modify her hypothesis
accept her hypothesis
experiment again
reject her hypothesis
PAG
Answer:
accept her hypothosis
Explanation:
through experiment she was right stick with it
Which life function is most directly involved in the control of the muscles of an earthworm that is moving from dry to moist soil?
life functions is most directly involved in the control of the muscles of an earthworm that is moving from dry to moist soil transport.
The correct option is 2.
Can earthworms survive in the absence of soil?Tillers do not just chop, but they also diminish the number of natural materials available for nourishment. If they make it through all of that, they may live for four to eight years, depending on their species. Because earthworms require moisture, they may only live for a few minutes if removed from the soil.
Is it harmful to touch earthworms?Some species have the ability to sting. Earthworms and red wax worm worms are okay to handle barehanded, however, you should probably wash you hands before consuming your next meal.
What is the purpose of setae?Setae are bristles that cover each segment of something like the earthworm's body.. They keep the earthworm from moving backward. FEEDING The earthworm is uniquely designed to feed underground.
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I understand that the question you are looking for is:
Which life functions is most directly involved in the control of the muscles of an earthworm that is moving from dry to moist soil?
1)regulation
2)transport
3)nutrition
4)excretion
What types of materials require a vesicle for export or a food vacuole for import?
Macromolecules or large particles are carried across the cell membrane via vesicles or other intracellular structures. Pinocytosis and efflux are the two types of vesicle transport.
How does a vesicle leave the cell with its cargo?Exocytosis is the process by which cells move components from within the cell to the extracellular fluid. Exocytosis occurs when a vesicle's plasma membrane fuses with it, expelling its contents outside the cell.
The Golgi, also known as the Golgi complex, is a flattening, layered organelle that looks like a stack of pancakes. The Golgi body modifies and packages proteins and carbohydrates into lattice vesicles for "exportation" from the cell.
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"...upon studying the red tortoise species of North Carolina, I have found that the animals live in small communities that interact in odd ways with other organisms, making a larger population. Due to this species' slow reproductive rate and long life-span, it stays within the carrying capacity of its home habitat. Due to this fact, it has a J-shaped growth pattern, as shown in this slide. The red tortoise keeps populations of poison ivy plants in check within the area, making this animal a tertiary (third level) consumer within its food chain. I've seen no adverse effects on the tortoise from eating the ivy, making it a peculiar consumer. As a native (or in other words 'invasive') species, the tortoise has developed this immunity by living in the area for thousands of years before mankind, acting as a sort of density-dependent limiting factor for the plants in the area." After the lecture, Mrs. Graham thinks she noticed some inaccuracies in the professor's lecture transcript and believes that the professor is full of hot air. Is Mrs. Graham correct? Read through the passage above and note any inaccuracies in the information. Support your reasoning with the correct information to fix the professor's mistakes. Rubric: Introductory Sentence that introduces the topic: Name the inaccuracies: Support your claim of each inaccuracy with the correct information: Concluding sentence that sums up the main points:
The incorrect statements are as follows:
Red tortoise species are found in North America. The species' slow reproductive rate and long lifespan have nothing to do with living in small communities and interacting with other organisms.The red tortoise does not have a j-shaped growth curve. The red tortoise doesn't eat the poisonous ivy plants, which is a very dangerous and life-threatening aspect of tortoise life.The fact is true that the tortoise is a tertiary consumer but not by consuming ivy plants instead by eating fruits, berries, vegetables, insects, etc. What are the general characteristics of a tortoise?These species have a long life span which is due to genetics, the DNA repair system, and strong immune response.They have a normal growth curve that is described according to their lifespan.Red tortoise is a wild type, which still consumes by primary and secondary consumers and is known to be tertiary consumers.To know more about tortoises and their habitat visit:
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In a chemical reaction, substance A transfers electrons to substance B. which statement is correct?
• Substance B is oxidized and acts as the reducing agent.
•Substance A is oxidized and acts as the oxidizing agent.
•Substance A is reduced and acts as the reducing agent.
•Substance B is reduced and acts as the oxidizing agent.
Chemical reactions are said to be the changes that form new substances. When A transfers electrons to B then substance B is reduced acts as an oxidizing agent.
What are oxidizing agents?Chemical reactions are said to use compounds known as electron acceptors as oxidizing agents. They receive electrons from the reducing agent to finish their electrical configuration of the valence shell. These also go by the name "oxidizer."
Because it donates extra electrons from the valence shell, substance A, which is an electron donor, acts as a reducing agent. While giving electrons, some compounds undergo reduction. The best example of this is NaCl, where the sodium atom provides electrons and the chlorine atom takes them.
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You should ask the patient if he/she is okay before performing cpr. true or false
Yes, we should to ask to patients if she or he okay before CPR.
True or false: CPR should be to a patient who is unconscious but not unresponsive?CPR needs to be started right away if the patient isn't breathing, unconscious, or has no pulse. Always keep in mind that chest compressions are the first step in good CPR. It's crucial to remember that death is most likely to occur after 10 minutes of brain oxygen deprivation.
Before performing CPR , check vict is responding or not. Ask her if she is ok and touch on her shoulder. If she responds or is breathing CPR is not necessary.
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Answer: This is true.
Explanation: Before performing any first aid/CPR, you should ask permission unless they are unconscious or unresponsive.
Which lettered points would you use to show Zoe’s voluntary action of choosing to move her leg out of the way? What should the labels be?
Point D is designated for Zoe's voluntarily moving her leg out of the way. The signal that travels down the spinal cord to the skeletal muscle originates at point B. Zoe moves her leg out of the way from point C by using her muscles.
Voluntary actions :An anticipated, goal-oriented movement is voluntary action. Numerous fields of study—including cognitive psychology, operant conditioning, philosophy, neurology, criminology, and others invoke the idea of voluntary action. Actions that are "originated by the doer with knowledge of the particular circumstances of the act" are referred to as voluntary actions.
The cerebrum manages all of our body's voluntary movements. The largest and most noticeable portion of the brain is called the cerebrum. Four different types of voluntary actions are motivated by the neurons of pain, fear, and the unpleasant aspects of desire and appetite. These are, in order, the "optimization," "escape," "avoidance," and "approach" actions. All of these actions get rid of the motivating resentment.
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Answer:
Because this action is a voluntary action, it starts in the brain. Here are the steps:
D: Zoe chooses to move her leg into a different position.
B: Signal travels down spinal cord to skeletal muscle.
C: Zoe uses muscle to move leg out of the way.
Point A is not used in this sequence of steps.
Hope this helps!
Explanation:
Sample answer
Many times a shark is seen with pilot fish swimming around it, eating scraps of food from the shark's meal. The shark is not harmed by the pilot fish, and the pilot fish benefits from the shark. What kind of relationship is this?
Commensalism : One organism benefits while the other neither benefits nor is harmed.
Commensalism :Long-term biological interactions known as commensalism occur when members of one species benefit while members of the other species suffer neither benefits nor harm.
What is a interspecies relationship?A nonsexual relationship that develops between animals of various species is known as an interspecies friendship. There have been numerous reports of interspecies relationships between wild and domesticated animals that have been captured on camera and in video. Competition, predation, and symbiosis are the three main divisions of interspecies interactions.
What is the difference between interspecific and interspecies?While intraspecific interaction refers to competition between members of the same species for territory, food, and mating, interspecific competition is the competition between members of different species for either food or territory.
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Circle the letter of the situation that most closely relates to each vocabulary word.
3. Ionic bond:
a ) linking hands in a human chain
b ) passing a basketball
Answer:
b. passing a basketball
Explanation:
-
