B)underwater
Explanation:
Judging by the presence of limestone in the Ordovician rocks, we can conclude that the ancient Indiana was once being underwater.
The fossils found in a rock are very good indicators of the paleoclimatic conditions in an area.
Since we have an abundance of rich marine organisms, then the area must have been under a vast expanse of ocean water.
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A is the answer, a squirrel wouldn't need to swim, a desert animal needs to be able to deal with low water conditions because there is little water in the desert and birds need to be able to groom themselves.
It is a substance.
Having chemicals or bad things in it.
Why didn't you go to dictionary.com?
It's volume increases much more rapidly than it's surface area.
Quartz sand and Black sand are the most common. Each type is formed by rocks breaking down from weathering.