How do proferan animals differ from coelenterate animals?

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Suppose you are estimating the size of a blue crab population. what is the population size if the number marked in the first catch is 40, the total number in the second catch is 200, and the number marked in the second catch is 50?

Liquid water turns into water vapor at which step in the water cycle

Organisms that successfully adapt will leave to grownone of the above