Comparative physiologists often study organisms that live in extreme environments (e.g., deserts) because they expect to find especially clear examples of evolutionary adaptation.
She dwells in the wounds of the world, deserts, ruined houses, poverty, tatters, hunger, thirst, quarrels, mourning of children, in wild and other uncivilized, dangerous places.
Larks' eggs are usually speckled, and clutch sizes range from two (especially in species of the driest deserts) to six (in species of temperate regions).
