Climates near the equator are warmer than at the poles because
a. the sun's rays have greater energy at the equator
b. the sun's rays are more concentrated at the equator
c. ice at the poles absorbs the sun's rays
d. the equator is near a low-pressure belt

The correct answer is (b) The Sun's rays are more concentrated at the equator

The rays at the equator are more concentrated and as a result of this the equator is warmer than the pole. The hotness of the place depends on the angle by which the sun ray falls on it. When the sun ray falls on the equator then the angle made by the sun at equator is 90 degree. This means that the sun rays are concentrated. But at poles the angle by which the rays fall is relatively shallow and the rays gets separated over a large area.

This makes equator more warmer than pole.

as the gila monster consumes the eggs or young of the desert cottontail and gambel's quail, thus its main food supply is only accessible for a restricted time duration every year. however, for this, the gila monsters exhibit three adaptations, which elevate their survival rate in the desert condition.  

first, is that they possess huge bodies, and can consume greater concentrations of food during a small period. secondly, they require to feed infrequently as they can accumulate fat in their tails. ultimately, their rate of metabolism is very low, so that they can burn their reservoirs of fat gradually.  

the answers are as following:

1. c. double helix, nucleosome, coil, supercoil, chromosome

2. b. g2 phase, preparation for mitosis

3. d. interphase consists of the g1, s, and g2 phases

4. c. metaphase

5. a. chromosomes are duplicated before cell division so that each new daughter cell has a complete set