What is the purpose of the president’s statement? to show how changes in fiscal policy can affect the economy to show the size of the deficit relative to gdp to show how large the national debt was when he took office to show how he plans to reduce the national debt?

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.'

answer; conceptual skills;

all you have to do is give a good answer with details and the answer has to be understandable and then they will most likely give you the brainliest answer.