Answer:
Helper T-cells stimulate B-cells to make antibodies and help killer cells develop. Killer T-cells directly kill cells that have already been infected by a foreign invader. T-cells also use cytokines as messenger molecules to send chemical instructions to the rest of the immune system to ramp up its response.
Answer – United States Environmental Protection Agency
The Government Agency that was created to protect our natural resources is the United States Environmental Protection Agency (U.S EPA). This agency does so by writing and enforcing regulations based on laws passed by Congress.
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Answer: Reciprocity
Explanation:
Because of his help, which is not a small one since he has carried heavy things upstairs, he is hoping that reciprocity will make you willing to help him too.
This is referring to an obligation in returning the favor because he was doing that favor to you at first.
Then, both of you will have done a benefit that is good for both and this is considering a good action. He knows that you should be willing to do that more than anyone else because he has done favor to you.
Answer:
It is important because it allows managers and employees to share vital information, which helps companies succeed.
Explanation:
