As you walk into a brightly lit room, the black structure in the center of your eye seems to shrink to a tiny black dot. this response is caused by the action of the eye structure called the:

Hello there

the answer is iris

Hope it helps

Best Regards Queen Z

thank you

it takes hundreds of years to become stable.

if you have another question lmk.

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.