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:
See explanation
Explanation:
Hurt children's self esteem is obvious; Cause aggressive behavior has been proven by science. Everything else are not things that shaming or insulting language could cause.
Answer:
Drug abuse may lead to all of the above.
Explanation:
Blood alcohol content (BAC) is a measure of the amount of alcohol that is present the blood.
A heavier person will have a lower blood alcohol level due to a greater amount of water in their body. The more a person weigh, the more water he/she tends to have in his/her body. The water has a diluting effect on the alcohol so the BAC will be lower in comparison with person who is slimmer and has less water in the body.
Answer:
Several viruses are known to cause hepatitis, which refers to inflammation of the liver. You may lower the risk of getting hepatitis by avoiding risky behaviors, such as sharing needles, having unprotected sex and drinking large amounts of alcohol. In the US, there are vaccines for two types.
