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What is the topic? what is this question?
Answer:
D -herbivore population sizes decrease ,then the carnivore population sizes decrease
Answer:
A band - light central region of sarcomere.
Explanation:
Sarcomere is the basic structural unit of the skeletal muscles. These sarcomere shows striations ( light and dark bands) when veiw under the microscope.
A band or anisotropic band is the dark region of sarcomere. A band consists of both thick and thin filaments of actin and myosin proteins. The A band has the ability to refract light and appears dark.
Thus, the correct answer is option (D).
Answer: No
Explanation:
Mutualism is a kind of symbiotic relationship when two species lives in close association with each other to complete their life cycle. In this relationship both the species receives the benefit of association.
The given situation is not an example of mutualism this is because of the fact that in the association with the microbes the plants are more fit but the situation does not describe the fact that the microbe is also getting any benefit of association.