it's a summary of the number of individuals of each age in the population. Age structure is useful in understanding and predicting population growth. An understanding of population age structure is critically important to industries that harvest living organisms.
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686.8 j is needed to burn 4.24 grans of pd.
I would say ones that can be seen, it affects the physical era of life eg H20 one of its physical qualities is its clear... coloress
The answer is C) System. Systems can be found all over the animal kingdom. Most of the time, the organisms that belong to a particular system cooperate and collaborate with each other in order to remain healthy and safe.