Circumstances in which it may be useful to change several components/factors simultaneously during an experiment for separate replicates to account for natural and temporal alternations, regardless of time period or logistical difference.
Why is it important to repeat an experiment multiple times?Repeating an experiment more than once helps determine if the data was a fluke, or represents the normal case. It helps guard against jumping to conclusions without enough evidence. The number of repeats depends on many factors, including the spread of the data and the availability of resources.
With this information, we can conclude that A variable is anything that can change or be changed. In other words, it is any factor that can be manipulated, controlled for, or measured in an experiment.
Learn more about experiment variable in brainly.com/question/3210387
#SPJ1
If scientist would like to test the effect of pollution in a local valley, which model would be best?
a. Terrarium
b. globe
c. map
d. drawing
Answer:
Answer is A. Terrarium, :-)
✓ How are ecosystem boundaries imposed by
humans sometimes different from natural
boundaries?
There are artificial boundaries set up by humans to divide ecosystems, whereas natural limits are ones created by nature.
An ecosystem is a collection of both living and non-living entities and the interactions between them. Both natural and artificial ones are possible. There are two parts to any ecosystem: biotic and abiotic components. Natural ecosystems include, among others, forests, mountains, rivers, and grasslands. Human-made or Artificial Environment - When humans alter an ecosystem already in place to serve their needs or design a new ecosystem from scratch that closely resembles the natural environment, those modifications are referred to as artificial ecosystems.
Learn more about Ecosystems
https://brainly.com/question/28492392
#SPJ9
Cardiac cells are the main type of cells in the heart. Cardiac cells combine
to form the next more complex level of organization, called
Answer:
the cellular network in the heart.
Explanation:
Cardiac muscle cells form a highly branched cellular network in the heart.
What earths system are involved in the tomato plant hornworm relationship
The association between a tomato plant and a hornworm is known as parasitism.
Define parasitism.The hornworm caterpillar and tomato plant have a parasitic relationship because parasitism is a type of symbiotic relationship in which one organism benefits from the other while the other suffers. We are aware that hornworm caterpillars consume tomato crops by feeding on leaves. Therefore, the tomato plant is damaged while receiving nutrients from it. The tomato plant's edible vegetative portion serves as the system's input, and the hornworm caterpillar's transformation into a moth serves as the system's output.
All cowbird species and most cuckoo species engage in brood parasitism, a separate type of parasitism. Instead of making their own nests, these birds lay their eggs in those of other species and leave them there in the hopes that the adult birds of those other species will raise the abandoned young as their own.
to know more about parasitism check the link given below:
brainly.com/question/28007776
#SPJ9
The question you are looking for:
How might you model the relationship between a tomato plant and the hornworm caterpillar?
A true breeding plant with seeds
Answer:
this shows that orange and white are variants of the same gene
Explanation:
the other options are Incorrect because, if white was dominant the pods would be white, if both were codominant the pods would be mixed colour, and if orange was recessive then the pod would be white unless both genes were recessive
how did the the Formation of the Ozone Layer influence abiotic factors
in the enviroment?
The formation of the Ozone Layer influences abiotic factors such as temperature in the environment by absorbing an important amount of UV radiation, which leads to a decrease in this factor (temperature) over the earth's surface and helps with the homeostasis in the ecosystem.
What is the Ozone Layer?The Ozone Layer is a very tiny layer in the atmosphere mainly composed of ozone (chemical formula O₃), which serves to absorb the ultraviolet radiation (UV) in the atmosphere.
UV radiation is harmful to the communities because it increases the incidence of mutations and also affects abiotic factors such as temperature.
In conclusion, the formation of the Ozone Layer influences abiotic factors such as temperature in the environment by absorbing an important amount of UV radiation, which leads to a decrease in this factor (temperature) over the earth's surface and helps with the homeostasis in the ecosystem.
Learn more about the Ozone Layer here:
https://brainly.com/question/520639#
#SPJ1
another word for selectively permeable?
Answer:
semipermeable membrane.Answer:
tom asked what inspired you?
Laboratory Analysis:
Body: A single stem emerging from underground rhizome bearing needle-like leaves.
Size: 18 cm
Chromosomal Analysis: Plant body is diploid—chromosome number of 68.
Lignin test: Positive
Cuticle: Present
Leaves: Present—small, possessing 1 unbranched vein.
Roots: Present (fork at tips); contains vascular tissue.
Stem: Present (contain vascular tissue); some bearing sporangia
1. The organism would traditionally be classified into which Phylum?
a. Hepatophyta
b. Cycadophyta
c. Ginkophyta
d. Lycopodiophyta
e. Anthophyta
2. This organism is thought to be more closely related to members of which other phylum?
a. Bryophyta
b. Gnetophyta
c. Coniferophyta
d. Cycadophyta
e. Pteridophyta
From the laboratory analysis performed it can be inferred that the organism belongs to Phylum Lycophyte and the organism is closely-related related to Pteridophyte. Thus, correct options are D (lycopod) and E (Pteridophyte).
What are Lycophytes?Lycophytes are the vascularized plants, these have well-defined vascular tissue for the conduction of substances in the plant body.
Lycopods are small, green, leafy plants which have spores but no flowers. They are a little like mosses. The stems are short, vertically oriented, 2- or 3-lobed, and have secondary growth. The elongate, linear, ligulate leaves are borne in a dense terminal, spirally arranged cluster, and range in size from 5–50 cm.
The plants are also found to produce Lignin although it is restricted to angiosperms but it is present in lycopods. Therefore, correct options are D (lycopod) and E (Pteridophyte).
Learn more about Pteridophytes here:
https://brainly.com/question/12375814
#SPJ1
Does anyone have the answers to the worksheets for the 8th grade project? The Scale Model of the Solar System? 1. what is the biggest celestial body in the solar system? 2. Which is the biggest planet? 3. Which is the smallest planet? 4. List the celestial bodies from smallest to largest based on actual size? 5. List the celestial bodies from smallest to largest based on your model. Is your list from #4 the same as this list? 6. Does your model accurately show the relative sizes of the celestial bodies? If it does not, what would you do differently to make sure that your model shows the relative sizes of the planets accurately? List your sources: Actual planet sizes: Solar System model calculator: PLEASE HELP
Answer:
UY scuti,comet,planet Jupiter etc is the biggest celestial bodies in the universe,Jupiter is the biggest planet,Mercury is the smallest planet, Mercury, Dwarf planet etc are the smallest celestial bodies as dwarf planet eg Pluto has smaller area than Russia.The largest celestial bodies are UY scuti,Jupiter,comets asteroids etc are the longest celestial bodies. Interesting facts Billions of years ago a planet called Thiva collide to Earth which forms the satellite moon.
can you tell me what acne medication is commonly prescribed to teenagers but also appeared on the list of drugs prohibited during the first trimester of pregnancy
I want the answer please
Answer:
Base is the correct answer .
why is the theory of evolution a theory and not a law
If an atom has 24 protons and 25 neutrons, what would it be called? What is the
atomic number of this atom?
1, what do the numbers 3 and 4 refer to in 3NH4
三三三三三
The 3 in the 3NH4 denotes the 3 molecules of NH3 are there to balance the equation and 4 in the 3NH4 denotes that 4 molecules of hydrogen are bonded with one nitrogen atom.
Ammonium cation is a positively charged polyatomic ion with the formula NH4+ which is formed by protonation of ammonia NH3.
The lone pair of N forms bond with the H+ proton hence all the four bonds formed are polar covalent bond. It forms a tetrahedral structure.
The ammonium ion is mildly acidic in nature with conjugated base as Ammonia.
It is produced as a waste product by the metabolism of animals which is excreted out by our excretion system.
To learn more about NH3 here
https://brainly.com/question/16119085
#SPJ1
ECOLOGIST
DEFINITION
Answer:
An ecologist is a scientist who studies ecosystems
Explanation:
Give Brainliest if I helped
The table shows the mass and density of some substances density of substances mass g density of iron density of silver is the value of a less than greater than or equal to the value of p explain you ranswer
Answer:
lol
Explanation:
Match these items. Match the items in the left column to the items in the right column. 1. capital good factors derived from nature that are used to achieve a goal 2. human capital goods that are made and used to make other goods and services 3. human resource quality of labor resources 4. natural resource factors used to achieve a goal 5. productive resource quantity and quality of human effort used for production of goods and services
Match these items. Match the items in the left column to the items in the right column.
1. capital good =-----> 4 )factors used to achieve a goal
2. human capital----> 3) quality of labor resources
3. human resource -----> 2) goods that are made and used to make other goods and services
4. natural resource ----> 1)factors derived from nature that are used to achieve a goal
5. productive resource --- 5)quantity and quality of human effort used for the production of goods and services
services
This is further explained below.
What is human capital?Generally, Social scientists have used the term "human capital" to refer to the personal qualities that are seen as being beneficial to the manufacturing process.
In conclusion, To match each item you most compare there relationship , and see if it tallies subjectively
Read more about human capital
https://brainly.com/question/28244215
#SPJ1
what will happen if we had life without cell walls
Answer:
without cell wall they will be damaged. Cell also acts as permeable membrane for solvents and ions which cannot happen when cell wall is damaged.
Explanation:
Hope this helps♡
When evaluating the validity of a scientific claim, which of the following questions should you ask about the person making the claim?
Choose one or mores
A Does the person making the claim have the appropriate background knowledge and experience in the area of
the claim?
B. Where does the funding for the person's research come from?
C. Does the person making the claim have a personal or subjective reason to support the claim?
D. What is the marital status of the person making the scientific claim?
Answer: A. The First Option.
Explanation: A Does the person making the claim have the appropriate background knowledge and experience in the area of
the claim?
A Does the person making the claim have the appropriate background knowledge and experience in the area of the claim is question should you ask about the person making the calm.
How do you calm a person?Phrases such as “that must be really hard for you” or “I understand why that would make you anxious” can be very validating and show understanding and support.
Having a chance to talk could help them feel calmer and more able to deal with their stress. Being there for them and listening without judging them can help.
Gently let them know that you think they might be having a panic attack and that you are there for them. encourage them to breathe slowly and deeply – it can help to do something structured or repetitive they can focus on, such as counting out loud.
Learn more about calm:
https://brainly.com/question/515464
#SPJ2
Using your understanding of the function of chloroplasts and specialized cells, infer why plant root cells lack chloroplasts.
(1 point)
© Root cells have two central vacuoles.
O Root cells have many mitochondria.
O Roots require fewer nutrients.
O Roots are underground and are not exposed to sunlight.
Janice has been up now three nights in a row. Her 6-year-old son, Eric, starts screaming in the middle of the night. When she goes to his room, he is sitting up with his eyes wide open crying but is not responsive to her questions. It takes 20 minutes or more to wake him and then he seems just fine. What is Eric experiencing? What stage of sleep is he in when the phenomenon occurs? What is likely causing this problem and is there any possible resolution?
Answer:
Her child is probably experiencing night terrors. Her child probably has experienced something that has left him with trauma.
Explanation:
Differentiate between splash and hadal zone
The splash zone is the most exposed zone while the hadal zone is the deepest part of the ocean.
What are the zones of the aquatic habitat (ocean)?The aquatic habitat is divided into different zones which is as a result of the following:
temperature, access to sunlight for photosynthesis, dissolved oxygen content, and availability of nutrients.
The zones of the ocean include the following:Sunlight zone, the Twilight zone, the Midnight zone, and the Abyssal zone.
The difference between the splash zone and the hadal zone include the following:
The splash zone is also called the sunlight zone while the hadal zone is also called the Abyssal zone.The splash zone is the topmost part of the ocean that receives most of the light while the hadal zone is the deepest partofthe ocean that receives less light.Learn more about habitat here:
https://brainly.com/question/26826811
#SPJ1
Which of the following are supported by the diagram below? (Check all that apply and there is more than one)
A) The objects closer to Earth (the Laboratory Reference) show Blue Shift
B) The Star and Galaxies show Red Shift relative to the laboratory sample on Earth
C) The more distant Galaxies appear to have greater velocities
D) The amount of Red Shift increases with increasing distance
A) The objects closer to Earth (the Laboratory Reference) show Blue Shift
A - True
Explanation: Blueshift refers to the light that an item emits as it is traveling toward us. Wavelengths of blue light are often closer together. The majority of blueshift light comes from things that are moving in close proximity. We may tell if an object is traveling toward or away from us by examining the blue and red shift, as in the case of the Andromeda Galaxy.
B) The Star and Galaxies show Red Shift relative to the laboratory sample on Earth
B- False
Explanation: A redshift shows how a celestial object (star, planet, or galaxy) is traveling in relation to our own motion. It enables astronomers to calculate the separation between the oldest and most remote objects in the universe.
C) The more distant Galaxies appear to have greater velocities
C- True
Explanation: As the universe expands, the galaxies get farther from each other, and the apparent velocity will appear to be larger for the more distant galaxies.
D) The amount of Red Shift increases with increasing distance
D- True
Explanation: An object's redshift increases with distance. Some extremely far-off objects may release radiation at wavelengths as high as or even higher than the ultraviolet. The light's wavelength may change by a factor of 10 due to its long distance journey and red shifting.
To know more about wavelengths visit:
https://brainly.com/question/13533093
#SPJ1
Which of the following types of models is generally used to predict long-term events?
a. idea model
b. physical model
C. computer model
d. none of the above
Please select the best answer from the choices provided
HELP ME PLS
Think about the role of both biotic and abiotic factors within an ecosystem.
Describe a scenario in which one abiotic or biotic factor is added or removed from an ecosystem.
Explain the possible side effects on that ecosystem.
Be sure to –Address the prompt, provide support, and conclude your thoughts.
Answer:
A fish is a biotic factor and water that the fish lives in is a biotic factor if the water is removed all the fish will die, anything that relies on the fish to survive will decrease in population.
Explanation:
Identify the independent and dependent variable from the data table
Write a sentence explaining the connection among each group of words. Gametes, egg cell, sperm cell
An organism's reproductive cells are called gametes. They’re additionally known as sex cells. Male gametes are mentioned as sperm, whereas female gametes are mentioned as ova or egg cells. Each haploid cell that creates up a gamete has one copy of each chromosome. A male's sperm and a female's egg each contribute one chromosome to the process of reproduction. The chromosome that the male father provides determines the biological sex (male or female) of the kid.
A gamete is an animal or plant germ cell. Animals' male and feminine gametes are referred to as sperm and ova, respectively. Each ova and sperm carries one copy of each chromosome, making them haploid cells. A sperm and an ovum combine during fertilization to create a fresh diploid creature. A gamete may be a female or male sperm or an egg cell, to place it simply (male gamete). In mammals, sperm and ova develop within the male testes and female ovaries, respectively.
Gametes' sole or primary function is to perform fertilization in sexually reproducing organisms. A male gamete (sperm/spermatozoa) combines with a female gamete (egg/oocyte) during fertilization. n = 23 for people. Half of the chromosomes found in somatic cells, or the body's typical diploid cells, are found in gametes. Meiosis, a kind of cell division that cuts the number of chromosomes in a parent diploid cell in half, produces haploid gametes. The power of germ cells (GC) to divide meiotically and to reduce their genetic material by half results in the production of haploid gametes, or female oocytes and male spermatozoa, which expire genetic information from one generation to the next.
Learn more about gametes here:
https://brainly.com/question/7648924
#SPJ1
What are the individual ion contributions to the resting membrane potential of the cardiac pacemaker cells? Select all that apply.
The individual ion contributions to the resting membrane potential of the cardiac pacemaker cells include the following:
Greater concentration of sodium outside the cell.Greater concentration of potassium inside the cell.Calcium gradient with more calcium outside the cell.What is Resting membrane potential?This is defined as the potential of a cell when it is at a state of rest or the difference between the electric potential in the intracellular and extracellular matrices of the cell when there is no excitation.
Some ions which contribute to the membrane potential of cells include the following:
Na+K+Ca++ etc.In the resting membrane potential of the cardiac pacemaker cells, the concentration of K+ is higher inside the cell than outside while ions such as Na+ and Ca++ have higher concentrations outside than inside the cell.
Read more about Resting membrane potential here https://brainly.com/question/15459255
#SPJ1
5) Meerkats live together in groups called "Mobs." What kind of adaptation is this?
Meerkats inhabit huge underground tunnels in groups of 20–50 members of their extended family in groups called "mobs".
The female is the more powerful member of the alpha pair that controls these mobs. The majority of the group members are either the alpha pair's offspring or siblings.Meerkats are better able to survive when they live in communities. Adults alternately serve as the sentry or lookout during the day so that others can forage unafraid. A tall rock, termite mound, or shrub is scaled by the sentry, who then stands upright on two legs. He or she will use a specific call to signal the start of their guard duty. The sentry will bark or whistle an alarm if they notice a predator. The meerkats will flee to the closest hole, known as a bolt hole, if the sentry sounds the alert in anticipation of a predator. A meerkat mob may also stand together to appear larger and act fierce to frighten away the predator. They may even stir up dust to create concealment.Hence, it is an adaptation to survive.
Learn more about meerkats here:
https://brainly.com/question/13920090
#SPJ9
How does ATP release energy that is utilized by living cells for
ATP release energy that is utilized by living cells by by breaking a bond within an ATP molecule.
What is ATP?Thus is referred to as Adenosine triphosphate and is regarded as the energy currency of the cell. It is synthesized by ATP synthase which catalyzes its the reaction of ADP with an inorganic phosphate.
ATP release energy that is utilized by living cells through the process which is referred to as phosphorylation in which the phosphate group is transferred to another molecule by breaking a bod within the ATP molecule through special enzymes.
The energy released from the ATP is then used to power different activities which requires it in the body system of living organisms. This is therefore the reason why option B was chosen as the most appropriate choice.
Read more about ATP here https://brainly.com/question/897553
#SPJ1
The options are:
a. by being exposed to body heat
b. by breaking a bond within an atp molecule.
c. by being expose to sunlight.
d. by adding more phosphate group to itself.
