Which statement best describes how income levels have changed in the United States?

A. Income levels have fallen sharply as homeownership rates have

increased

B. Most income levels have risen in line with economic growth.

C. High-income earners have seen rising incomes, but most people

have seen limited gains.

D. All income levels have seen a sharp decline as inflation has risen.

SUBMIT

C. High-income earners have seen rising incomes, but most people  have seen limited gains

Explanation:

The description with respect to the level of the income varies in the United States is that the earners who has high income have seen that the income is increased but most of them have seen that there is a limited gain. If we are talking about the unlimited one so the chances is less

Therefore as per the given situation, the option C is correct

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.'

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