Explain how atmospheric carbon is incorporated into two oceanic sinks.

Explanation:

Atmospheric Carbon can be dissolved directly into the ocean or through precipitation.It flows and gets to the ocean. They are then taken up by marine organisms for production and strengthening of their shells and skeletons.

Carbon can also react with other elements to form limestone or sedimentary rocks.

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the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form