Answer is C undergo swimming training within one year . I think
Answer:
1. Electrical impulses in the heart cause the muscle to contract.
2. To keep the blood flowing in only one direction
Explanation:
In the first question, the correct answer is ''Electrical impulses in the heart cause the muscle to contract''. Every muscle in our body contracts because of electrical impulses and this is also true for our hearts. Or any hearts in nature that we know of.
In the second question, the answer is ''To keep the blood flowing in only one direction''. We have those valves and without them, we wouldn't be able to function as we do.
Answer:
a stressor
Explanation:
? if you're looking for a general term
No image, or possible answer choices ??
Answer:
true alr i donteven know this is a troll comment but ill go with it
