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

Species that can tolerate a wide range of salinity are called $............$.

Which scientist proposed that a population is a group of individuals of the same species?

Consider the following four conditions $(i-iv)$ and select the pair that represents the adaptation of desert lizards to their environment.
$(i)$ Burrowing into the soil to escape high temperatures.
$(ii)$ Rapidly losing body heat during high temperatures.
$(iii)$ Basking in the sun and absorbing heat when the temperature is low.
$(iv)$ Insulating the body due to a thick layer of fat.

What is homeostasis? Define aestivation.

Why do mammals of colder regions generally have shorter ears and limbs?
$I.$ To minimize their surface area to volume ratio
$II.$ To minimize heat loss
$III.$ To maximize their surface area to volume ratio
$IV.$ To maximize heat loss
Choose the correct combination from the given options: