All living creatures have some form of sleep that they engage in at regular periods, making sleep a(n) function. a. environmental b. biological c. species-specific d. psychological

The correct answer for: All living creatures have some form of sleep that they engage in at regular periods, making sleep a(n) function. Is: B. biological

Explanation:

To understand this answer we have to explain all of the options. First of all.

a) is wrong because if sleep was an environmental function. Living creatures could only achieve sleep in a certain environment, and a tired living creature can sleep in any place.

c) s wrong because even though some species don't sleep as we know sleep they have some sort of rest stage that can be comparable to our sleep or the general sleep concept.

D) Sounds tempting but it's not. Because it means that the determining factor of sleep would be psychological instead of fatigue or energy recovery. Also, in a more purist psychological way. Only humans have psychology. Animals and plants behave. So it's tricky but wrong.

B) is correct because sleep is the stage in which living things enter to rest and recover energy.

citizens were able to charge more for their goods and services