<em>Answer:</em>
B. Estuary is most likely to be a marine ecosystem
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We cannot see the picture clearly it is blurry.
ATP molecule functions as the power source for a cell. Sometimes it is compared to a battery, which is a pretty fair analogy, but it is more mobile and flexible in its functions than a battery is.
B. Controlling the flow of Blood to the skin seems to make the most sense
The answer is: B) silkworms.
“While sitting in her garden she deduced the secret of silk by watching the silkworms. She developed the process to remove the thread from the cocoon and set up silk cultivation farms and the weaving of the new cloth.” (Source: http://4kyws.ua.edu/SI_LING_CHI.html)