40 points Which of the following is a division in the geologic time scale? Mark all that apply.
(a) eons
(b) eras
(c) periods
(d) epochs

all the answers

Explanation:

The geologic time scale is divided into eons, eras, periods, epochs and ages

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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.

a. population growth is decreasing

-2

+4

-10

-3

-8

-3

so the population decreased by 24 because 3+3+8+10+2=26-2=24.

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explanation: