Metro City operates its own municipal public drinking water system for which the Environmental Protection Agency has set maximum levels of pollutants. Metro does not use any equipment to meet these standards. With regard to any contamination of the water, under the Safe Drinking Water Act, this is most likely Group of answer choices

answer; i do believe that the correct answer is ; ///are valued more highly than their cost;

the answer is b for dog

ans.

heterothermic organisms include those organisms that can switch between homeothermic (having body temperature higher than environment) and poikilothermic (having variation in internal body temperature) strategies.

some migratory birds show heterothermy as they decrease their metabolic rate during cold nights to keep their body temperature low. drop in metabolic rate allows increase in production efficiency of birds that reduces the internal body temperature to make it equal to external cold temperature during cold nights.

thus, the correct answer is 'birds allow their temperature drop in order to increase their production efficiency.'

it's obviously d. it could be c though.