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yulyashka [42]
3 years ago
7

Rocks have been found in South America that are very similar in make-up and age to rocks in South

Biology
1 answer:
Stels [109]3 years ago
6 0

Answer:

B.

Explanation:

Once we were one big continent, so similarities on coasts of two different continents is evidence of them being once together

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The _____ sends out an electrical impulse that regulates the heartbeat.
olga nikolaevna [1]

Answer: The SA node

Answer choices are:

<span>A.      </span>The AV node

<span>B.      </span>The SA node

<span>C.      </span>The purkinje fibers

<span>D.     </span>The AV bundle

The SA node<span> is the heart's natural pacemaker consisting of a cluster of cells located in the upper part of the wall of the right atrium. (the right upper chamber of the heart). The electrical impulses are produced and sent out from there to regulate heartbeat. This is also called the sinus code.  </span>

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3 years ago
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The ability to fuse one's identity with that of another without fear of losing it characterizes what erikson called the psychosexual.

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