Answer:
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Answer:
C. The first animals that could live both in water and on land appeared during the <u>Paleozoic Era</u>
One organism benefits while the other is harmed
The one reason is to limit the power of Federal Government.
This division of authority is referred to as "federalism". The <em>Federal government</em> is very strong, with much power over the states, but at the same time, it is limited to the powers enumerated in the constitution. Powers not delegated to the <em>Federal government</em>, nor prohibited to the <em>States</em> are reserved to the states or to the people.