Why is it difficult to know the impacts of deep sea mining? a. it has never been tried successfully, so we don’t know exactly how it can be done. b. it is only done in environmentally sensitive areas where the organisms are being harmed in many ways already, and it is difficult to know the effects of mining. c. we know relatively little about deep sea ecosystems, making it harder to assess the impact of mining. d. most countries have laws against it so the impacts have not been tested.

the answer is c. very little of the oceans  have been explored, especially the deep seas and oceans hence little is known about the ecosystems in these regions (especially abyssalpelagic zones).   deep-sea mining, therefore, can have an impact on these ecosystems that humans do not currently decipher.

the form of energy changes and the total energy increases0l

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.