Which of the following is not an example of an adaptation? a . an individual choosing to put on a coat to stay warm b . the white fur on polar bears c . the secretions made by a clown fish to protect the organism from sea anemones

the supermassive black hole is in the middle of the galaxy.

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explanation:

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.