Which one of the following is one of the characteristics of a biological community?

Ecological equivalents refer to:

The genus $Quercus$ is a dominant component in which of the following?

Which of the following pairs is mismatched?

The forest that changes color in autumn is:

Small animals have a larger surface area relative to their volume,so they tend to lose body heat very fast when it is cold outside. Then they have to expend much energy to generate body heat through metabolism. This is the main reason why very small animals are rarely found in polar regions. Which of the following explains why small animals are more easily able to climb up a rock compared to large animals?