Blood levels of the readily available fuel, glucose, are tightly regulated by two chemical messengers. One of these, called insulin, decreases blood glucose. The other chemical messenger, called glucagon, increases blood glucose. Both chemical messengers are present at varying levels in the blood at all times. From the choices below, select all of the events that you think will happen in response to a decrease in blood glucose. a. Insulin levels increase
b. Insulin levels decrease
c. Glucagon levels increase
d. Glucagon levels decrease
e. Blood glucose levels begin to increase
f. Blood glucose levels continue to decrease
g. Blood glucose levels remain unchanged

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.  

answer; the tunica intima also called tunica interna, consists of elastic fibers,connective tissue and smooth muscle cells;