Carbon-oxygen cycle in your own words definition

The carbon cycle is where carbon dioxide goes from the air into living creatures and the Earth, at that point over into the environment. Plants take carbon dioxide from the air alongside water and photosynthesis from the sun and use it to make food.

Explanation:

b - the respond is innate and varies over time.

good luck!

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.