Which of these is/are considered the major biomes of the world?

Succulent xerophytes are likely to be found in

Relative to roots, the shoots are massive in plants of

Which of the following organisms do not enter a state of dormancy to escape environmental stress?

Alpine forests occur at altitudes of:

In summer,when the outside temperature is higher than our body temperature,we sweat profusely. The resulting evaporative cooling,similar to what happens with a desert cooler in operation,brings down the body temperature. In winter,when the temperature is much lower than $37^{\circ}C$,we start to shiver,a kind of exercise which produces heat and raises the body temperature. These organisms are called: