Behavioural adaptation to environment in desert lizards are

$I.$ Burrowing soil

$II.$ Losing heat during high temperature

$III.$ Active during morning and evening

$IV.$ Insulating body due to thick fatty dermis

Select the correct pair

Distinguish between the following:

$(a)$ Hibernation and Aestivation

$(b)$ Ectotherms and Endotherms

Of the several gases in atmosphere, plant life mostly depends upon

A lizard-like member of reptila is sitting on a tree with its tail coiled around a twig. This animal could be

People living at sea level have around $5$ million $RBC$ per cubic millimeter of their blood whereas those living at an altitude to $5400$ metres have around $8$ million. This is because at high altitude