What is an estuary? a) where a freshwater river runs into an extension of the ocean. b) where a freshwater river runs into an extension of a lake. c) where a freshwater river runs into land. d) where a freshwater river runs into another river.

the index of refraction of the second medium is higher. i just took the test trust me !

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.