Choose the true statement from the list below.

a) constructive and destructive processes never happen together.

b) weathering is the process where new land is formed.

c) weathering is the breaking down of rock and erosion is the movement of the smaller pieces.

d) weathering and erosion are two words for the same proces

a. decomposes use carbon from dead organisms as fuel for cellular respiration, returning carbon dioxide back into the atmosphere.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.