Answer:
b) A volcanic eruption
Explanation:
A volcanic eruption is the catastrophic event most likely will have the effect of returning an ecosystem to primary succession. Hence, option (b) is correct.
Answer:
A
Explanation:
l think bcoz volcanic eruption has to do with fire and then it effects the ecosystem and because people are examples of the ecosystem
Why do variations in generation time exist among different species of microorganisms?
Variations in generation time exist among different species of microorganisms because the optimal conditions will vary among species in any given environment.
In the field of microbiology, we can describe generation time as the time that is taken by a particular microorganism to divide.
Each microorganism requires some optimal conditions to divide. Some microorganisms might divide at higher temperatures, others at normal temperatures, and some at cold temperatures. Besides temperature, factors such as pH, nutrients, etc play important role in generation time.
Hence, different microorganisms will have different generation times in a particular environment. A microorganism having optimal conditions will have lesser generation time in an environment compared to a microorganism for which conditions are not optimal.
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A biologist discovers a seed-bearing plant that has never been classified. Which feature will help him determine whether the plant is a gymnosperm or an angiosperm?.
The biologist should check the female structures of the plant, if the egg is enclosed in a protective structure.
Seed plants come under the sub-division Spermatophytes. They usually have a special structure that produce the male and female gametes. The gametes undergo a process called fertilization, forming an embryo enclosed inside a seed. Depending on the nature of the seed, seed bearing plants can be classified into angiosperms and gymnosperms.
GymnospermsGymnosperms have exposed seeds. They bear their seeds on special structures called cones. After fertilization, the seeds are produced on the cone, after which it gets carried away by wind or animals.
AngiospermsAngiosperms bear their seeds on special reproductive structures called flowers. The male gamete called pollen can be produced on the same or a different flower. It fertilizes the female gamete in the ovule, where it forms the seed. After fertilization, the rest of the flower forms a protective covering for the seed called a fruit.
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1. Compare the terms species, population, and
Community.
In what types of cells or tissues are the starch granules of a modified stem primarily found?
Starch granules of a modified stem primarily found either in chloroplasts ( leaves) or in specialized amyloplasts.
What are starch granules?A starch grain is essentially a densely packed storehouse of glucose sugar units. Many plants store starch grains in underground organs like roots, bulbs, tubers, and rhizomes, in addition to seeds and stems. Abstract. Starch, the primary storage carbohydrate in plants, is synthesized as semi-crystalline, insoluble granules in plastids. Plants primarily store carbon in the form of starch. It appears as semi-crystalline granules composed primarily of two glucose polymers, amylose and amylopectin. Starch granules have distinctive internal growth rings. Granule size and shape can differ depending on the plant organ in which they occur and between species. Starch is the primary storage carbohydrate in most photosynthetic organisms, allowing carbon and energy accumulation in the form of an insoluble and semi-crystalline particle.To know more about starch granules :
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What types of microscopy have provided the most information about the structure and morphology of ebola virus? mark all correct answers.
Use of immunoelectron microscopy to show Ebola virus during the 1989 United States epizootic
What is Ebola virus ?Blood clotting issues are brought on by the Ebola virus. Because the clotting issues induce internal bleeding as blood seeps from small blood vessels in your body, the virus is also known as a hemorrhagic fever virus. The virus also damages tissue and creates inflammation.
Its starting point or origin are unknown. According to scientists, it is transmitted by animals and most likely originates from bats, which also spread the Ebola virus to people and other animals. There is no evidence that the virus can be spread by insects, including mosquitos. A person who has been infected can pass the infection to others.Learn more about Ebola virus here:
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Roberto examines two molecular models. He sees that the atoms are the same in each model and are attached in the same order in each model. However, he cannot make the models appear the same without breaking a double bond.
The thing that the models represent isB. two geometric isomers that have the same molecular formula.
How to illustrate the information?Their prior and subsequent positions are depicted by the bond's hue. The two models that Roberto is in possession of are Structure 1 and Structure 2. Due to differences in the blue and green bonds, these two structures are not identical to one another (still the molecular formula of both compound is same). Structure 2 is identical to and becomes structure 3 when structure 2 is broken at the double bond, rotated 180 degrees, and then reassembled.
It indicates that the positions of the substituents in space are different (3D). Furthermore, we are aware that a double bond cannot be turned into a single bond. Consequently, we have two isomers (such isomers that have distinct positions) as a result of the restriction on double bond rotation.
Therefore, the thing that the models represent is two geometric isomers that have the same molecular formula.
In conclusion, the correct option is B.
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Roberto examines two molecular models. He sees that the atoms are the same in each model and are attached in the same order in each model. However, he cannot make the models appear the same without breaking a double bond. What do the models represent?
two structural isomers that have the same molecular formula
two geometric isomers that have the same molecular formula
two organic compounds that have the same structural formula
two models of a single organic compound
The __________ , on the posterior thorax, are roughly triangular in shape. They have no direct attachment to the axial skeleton but are held in place by trunk muscles.
According to the research, the correct term to fill the blank space is scapula. The scapula, on the posterior thorax, are roughly triangular in shape. They have no direct attachment to the axial skeleton but are held in place by trunk muscles.
What is the scapula?It is a spacious bone each responsible for supporting muscles that is part of the shoulder and has a triangular shape forming part of the shoulder girdle.
In this sense, it is located in the upper limb, just in the posterior-superior area of the thorax and functions as a stabilizer of the shoulder joint complex, working as an anchor for the shoulder and dorsal back muscles.
Therefore, we can conclude that according to the research, the correct term to fill the blank space is scapula. The scapula, on the posterior thorax, are roughly triangular in shape. They have no direct attachment to the axial skeleton but are held in place by trunk muscles.
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Starch is the storage form of glucose in ________, glycogen is the storage form in ________.
Answer:
starch is the storage form of glucose in plants
glycogen is the storage form primarily in livers and muscles
Animals can be trained to perform many behaviors through _____; that is, by providing well-timed rewards as the animals progressively better approximate the desired behaviors.
Animals can be trained to perform many behaviors through shaping; that is, by providing well-timed rewards as the animals progressively better approximate the desired behaviors.
In the field of psychology, shaping can be described as using reinforcement in order to learn or teach new behaviors. By learning new behaviors, a specified target behavior can be achieved.
In animals, the method of shaping is used in order to teach them the desired behavior. The animals are taught progressively behaviors that will eventually lead to attaining the desired behavior. Through each progression, the animals are given rewards so that they are motivated to learn more and work harder towards learning the desired behavior.
The method of shaping is the best for training animals as they can learn easily through reinforcements.
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an analogy of the three boundaries plate tectonics we observe daily
The three boundaries of plate tectonics we observe daily are
Divergent borders are regions where new crust is formed when tectonic plates move apart from one another and diverge.
Convergent borders are areas where the crust is eroded away when one tectonic plate submerges under another.
Transform boundaries, the crust is neither created nor destroyed when tectonic plates glide horizontally past one other. These limits are also known as transform zone boundaries.
This is further explained below.
What is an analogy for plate tectonics?Generally, Another aspect of this phenomenon is the shifting of the planet's tectonic plates. The movement of a plate may be thought of as being analogous to that of a conveyor belt.
In conclusion, The "tectonics" component of plate tectonics refers to the motion of the plates and the locations at which they move.
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Questions
What happens to an
organism if
an organ or
organ system does not
function properly?
Answer:
All of the organ systems of the body work together to maintain the homeostasis of the organism. If homeostasis fails, there can be severe consequences ranging from a simple disease or death.
how could you tell if your immune system were not functioning well
Answer: Allergy Asthma & Immunology reports that signs of a possible immune deficiency in adults include: Having more than four ear infections in one year. Developing pneumonia twice during a one-year period. Suffering from chronic sinusitis or more than three episodes of bacterial sinusitis in a year.
Explanation:
what is mean observation?
Examine the assumption.
Assumption: Fatty foods are harmful to human health.
Which statements accurately describe how the assumption affects scientific thinking?
(Select all that apply.)
A. Because scientists think fatty foods are harmful to human health, they tell nutritionists to recommend diets low in fat.
B. Because scientists think fatty foods are harmful to human health, they tell nutritionists to recommend diets with equal amounts of fats, carbohydrates, and proteins.
C. Because scientists think fatty foods are harmful to human health, they tell nutritionists to recommend diets high in fat.
D. Because scientists think fatty foods are harmful to human health, they tell nutritionists to recommend diets without fat.
Answer:
I think 'B' is the answer ✌
If the phylogeny was built using maximum parsimony, how many evolutionary transitions does the most parsimonious tree contain?
The phylogenetic tree depicted in the question if built using maximum parsimony, contains five evolutionary transitions . These are marked by the alphabets A, B, C, D and E.
phylogenetic tree is a visual representation of the relationship between species, taxa, individual, population, etc.Node is a hypothetical ancestor, usually denotes a speciation or separation eventBranch represents the evolution of a lineageTip is the species, individual, or other entity that we are studyingOperational Taxonomic Units (OTU) is the technical term for the tip in the treeClade is a species, meaning an ancestor, and all of its descendantsMonophyletic is a taxonomic group consisting of all descendants of the group's most recent common ancestor and nothing elseTo know more about phylogenetic tree visit : https://brainly.com/question/13577065
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Interneurons are neurons:_________
a. solely devoted to the autonomic system.
b. solely devoted to activation of muscles.
c. that connect to other neurons.
d. that take care of other neurons.
Interneurons are neurons: c. that connect to other neurons.
What do neurons with interneurons do?Interneurons, as their name indicates, are the intermediary cells that link spinal motor and sensory neurons. Interneurons can exchange impulses with one another as well as with sensory and motor neurons, producing circuits of varying degrees of complexity.
Only the central nervous system contains interneurons, sometimes referred to as association neurons. i.e., found in the brain and spinal cord but not in the nervous system's peripheral portions
In fact, the enteric plexuses are unusual within the ANS in that they house excitatory and inhibitory enteric motor neurons, primary sensory neurons, and vast networks of interneurons.
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2.
A tropical forest has several species of
mammals like deer, rabbits, and squirrels. The
rabbits feed on the grass, the deer feed on
relatively bigger plants, and the squirrels feed
on fruits and nuts. In this scenario, which of the
following statements is correct?
The scenario given in the questions describes the habits of herbivores in a tropical rainforest.
An animal is considered a herbivore if it only consumes plants for food. An herbivore is adapted physically and physiologically to consume plant material as the majority of its diets, such as foliage or marine algae. Herbivorous animals often have mouthparts adapted for rasping or grinding due to their diet of plants.To survive, herbivores require a lot of energy. The environment needs a lot of plants to nourish your herbivores. In the given example of a tropical rainforest, enough foliage is present in different varieties to nourish the animals thriving there such as deer, rabbits, and squirrels.Moreover, the eating habits of the above-mentioned herbivores are slightly different, i.e., rabbits eat grass, deer consume shrubs and squirrels consume fruits and nuts. This reduces the competition between the three species to survive in the same ecosystem.
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Parrotfish are herbivores that are found in coral reefs. To escape predation, a parrotfish will graze with a rabbitfish, which has venomous spines at the end of its pelvic fins. The rabbitfish does not benefit from this relationship. Which type of relationship do the parrotfish and the rabbitfish have in the coral-reef environment?.
The type of interaction between parrotfish and the rabbitfish have in the coral-reef environment is Commensal/Commensalism.
What is commensalism?A relationship in which members of two different species depend on one another for food or other necessities without causing the other species any harm or gaining anything in return is known as commensalism.
The commensal, or species that gains from the connection, may take resources from the host species, which is unharmed, or find refuge, support, or means of movement. Frequently, a larger host and a smaller commensal are in a commensal relationship. The commensal species may exhibit significant morphological adaptation, whereas the host organism is virtually unaffected by the contact. Contrasting this relationship with mutualism, which benefits both species.
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A cell has 75% water (solvent) and 25% salt (solute). The solution outside the cell (solution A) has 50% water (solvent) and 50% salt (solute). is the solution out the cell hypertonic or hypotonic
A cell placed in a saline solution will lose water when water moves from the cell to the surrounding hypertonic medium via osmosis, causing the cell to shrivel up.
What transpires when a cell containing 10% salt is dissolved in a 10% salt solution?
A 10% salt solution, for instance, is hypertonic. A cell that is put in a hypertonic environment experiences a net migration of water to the cell's exterior (from the higher water environment inside the cell). In reaction, the cell contracts.
A cell will contract and lose water if it is submerged in a hypertonic solution. The size of the cell does not change in an isotonic environment since there is no net water flow. Water will enter a cell when it is in a hypotonic environment, causing the cell to expand.
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Which enzyme is responsible for breaking the hydrogen bonds between the dna double helix during replication?
Answer:
I think that's helicase
In the stomach, _______________ operates in an _______________ environment. this is required to start unravelling the protein structure.
Protein and Acidic environment are the right options.
Digestion is that the mechanical and chemical breakdown of food into small organic fragments. it's important to interrupt down macromolecules into small fragments of suitable size for absorption by the digestive epithelium. Large, complex molecules of proteins, polysaccharides, and lipids must be reduced to simpler particles, like simple sugars, before being absorbed by digestive epithelial cells. Different organs play specific roles within the digestive process. Animal nutrition requires carbohydrates, proteins, fats, and vitamins and minerals for a diet. How each of those components is digested is described within the next section.
carbohydrate
Digestion of carbohydrates begins within the mouth. Amylase, an enzyme in saliva, begins to interrupt down dietary starch into the disaccharide maltose. Since the bolus travels through the esophagus to the stomach, no significant digestion of carbohydrates occurs. The esophagus doesn't produce digestive enzymes, but does produce mucus for lubrication. The acidic environment within the stomach stops the action of the enzyme amylase.
the following step in carbohydrate digestion takes place within the duodenum. Remember, chyme from the stomach enters the duodenum and mixes with digestive secretions from the pancreas, liver, and gallbladder. The digestive juice also contains amylase, which continues to interrupt down starch and glycogen into the disaccharide maltose. I'm here. Disaccharides are diminished into monosaccharides by an enzyme called maltase
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Which statement best describes the purpose of nucleic acids?
O a structural component of hair and nails
O forms the membrane around all cells
O forms the structure of your genes
O broken down as a source of energy
For a gene that is only regulated by a repressor, a mutation that destroys the activity of the repressor would:_________
For a gene that is only regulated by a repressor, a mutation that destroys the activity of the repressor would cause the gene to be expressed at a higher rate since the repressor is inactivated.
In the field of genetics, a repressor can be described as a kind of protein that restricts the transcription of a gene. A repressor can either turn off the transcription of a gene completely or lower the rate of transcription of a gene.
A repressor binds at the specific promoter region of the DNA that transcribes a particular gene. As a result, RNA polymerase is unable to bind to the promoter. Hence, transcription does not take place.
If the activity of a repressor is destroyed due to a mutation, then this means that the repressor will no longer be able to bind to the promoter region. Hence, the gene will be transcribed more and expressed at a higher rate.
Although a part of your question is missing, you might be referring to this question:
For a gene that is only regulated by a repressor, a mutation that destroys the activity of the repressor would
(a) would have no effect on the gene's expression since the repressor is inactivated.
(b) prevent the gene from being expressed since the repressor is inactivated.
(c) prevent the gene from being expressed since the gene will also be inactivated.
(d) cause the gene to be expressed at a higher rate since the repressor is inactivated.
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what does a large base (many 0-9 year olds) mean for a countries future?
Anthropologists might best refute the idea that human culture is biologically determined by using which observation?.
All humans must eat, although different groups have different eating patterns.
What subject do anthropologists typically research?Archaeology, cultural anthropology, linguistic anthropology, and biological anthropology are today the four main subfields of anthropology.Each has a distinct set of study interests and typically employs various research methodologies.The approaches used include the social sciences, humanities, and even biology and geology, as well as other disciplines.When it comes to methods and methodology for learning about the human experience, biological anthropology and archaeology are typically the ones that are closest to the biological and physical sciences.Most anthropologists conduct research and share what they discover in their classes. Universities, colleges, and museums all hire them.However, a third of anthropologists apply their knowledge and problem-solving techniques outside of the classroom, in businesses, governmental and non-governmental organizations, hospitals, and other non-academic settings. They are practitioners in anthropology.Learn more about the anthropology with the help of the given link:
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Which division of the autonomic nervous system calms a person down once a stressful event has passed?.
Parasympathetic nervous system division of the autonomic nervous system calms a person down once a stressful event has passed.
What are parasympathetic nervous system?The autonomic ganglia of the parasympathetic nerve system are known as parasympathetic ganglia. The majority are small terminal ganglia, sometimes known as intramural ganglia since they are located either inside or close to the organs they innervate. The four paired parasympathetic ganglia in the head and neck are the exceptions.The parasympathetic nervous system, which conserves the body's natural activity and relaxes the person once an emergency has passed, is also known as the "rest and digest" system. Arousal is reduced as a result of the parasympathetic nervous system.In a stressful circumstance, which part of the nervous system is activated?Stress activates a number of important brain pathways, including the autonomic nervous system. Major depressive illness is one instance where the sympathetic nervous system may be persistently engaged without the typical parasympathetic nervous system's regular balancing function.
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What characteristics of water causes it to display all of the properties described above?
There is information missing? What properties described above? what do you mean by that, what are the properties above?
When an individual perceives an event (stressor) as stressful, the _____________ controls the activation of the endocrine system and the (autonomic) nervous system?
Answer: hormones
Explanation: It uses hormones to control and coordinate your body's metabolism, energy level, reproduction, growth and development, and response to injury, stress, and mood in your body.
Atoms are the fundamental unit of matter. there are three major subatomic particles. two subatomic particles are located in the atomic nucleus: [ select ] have a mass of 1 amu and a charge of +1, whereas [ select ] have no charge and have a mass of [ select ] . the third atomic particle is an electron and does not reside in the atomic nucleus, it travels in energy levels and orbitals around the nucleus. electrons are small, have little mass, move very quickly and have a charge of [ select ] . the atomic number of an atom refers to [ select ] . hydrogen is the most common atom in our universe and it has an atomic number of [ select ] . in its most common form, h does not have any neutrons in its nucleus which means that, by definition, most h is [ select ] . often, h loses its electron (which means it ends up with 0 electrons orbiting its nucleus) which makes it [ select ]
Atoms are the fundamental unit of matter. There are three major subatomic particles. two subatomic particles are located in the atomic nucleus: Proton have a mass of 1 amu and a charge of +1, whereas neutron have no charge and have a mass of 1.008665 amu. The third atomic particle is an electron and does not reside in the atomic nucleus, it travels in energy levels and orbitals around the nucleus. Electrons are small, have little mass, move very quickly and have a charge of -1 . The atomic number of an atom refers to number of protons . Hydrogen is the most common atom in our universe and it has an atomic number of 1 . In its most common form, h does not have any neutrons in its nucleus which means that, by definition, most h is protium . often, h loses its electron (which means it ends up with 0 electrons orbiting its nucleus) which makes it H + ion.
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HELP ASAP
Mrs. Digby was a very prissy person, always holding out her pinky finger when she drank tea and eating her cakes with neat, tiny bites. Afterward, she always folded her napkin in a tidy square and laid it exactly so on the table.
What is the correct meaning of prissy in this context?
Responses:
prim
elderly
fancy
perfect
Answer:
A. prim
Explanation:
Prim means formally precise or proper, as the person or behavior. Stiffly neat. In the context, it describes Mrs. Digby as a very neat person.
Hope this helps!
