Answer:
<h2>The Legislative Branch</h2>
In conclusion, The Legislative Branch is the most powerful branch of the United States government not only because of the powers given to them by the Constitution, but also the implied powers that Congress has. There is also Congress's ability to triumph over the Checks and balances that limits their power.
It might have been that once the Earth started to warm, some animals weren't able to adapt. Or possibly because new needs had to be met, so they found new animals to domesticate that could help with the new situation.