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

The moving away of an organism temporarily from the stressful habitat to a more hospitable area and return when stressful period is over is called . . . . . . .

Which organism does not drink water but uses water produced as a byproduct of its internal metabolic processes?

The ecologically fixed and genetically irreversible species are called

The elephant is an inhabitant of a hot climate. This is suggested by:

To which habitat is the elephant adapted?