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olga2289 [7]
3 years ago
9

1. Energy is the

Biology
1 answer:
I am Lyosha [343]3 years ago
5 0

Answer:

A is the correct answer, hope this helps

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EKG  is a test that measures the electrical activity of the heartbeat. With each beat, an electrical impulse (or “wave”) travels through the heart. This wave causes the muscle to squeeze and pump blood from the heart.

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the magnetic direction of rocks along the surface of Earth and the age of rocks along the surface of Earth

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