Answer:A) passive solar cooling
Hope this helps
Answer:
Spread
Explanation:
People use envelopes very often. The germs people carry are put into the envelope and then it's sent out to many others.
Answer:
Killer T cells release enzymes that help destroy invading foreign matter (antigens), Helper T cells, on the other hand, stimulate another type of lymphocyte known as B cells. B cells produce antibody, which is a protein made in response to a specific antigen.
Answer: Depends on where you live, in the U.S. its considered unconsitutional, but in other countries such as china, goverment offcials in bioharzard suits can take you.
Explanation:
