1. Should genetic engineering be used to purposefully change human genes and give people more desirable traits? Is this an ethical issue? Explain your response.

the areas around the equator

many other transport proteins, often called pumps, move materials against a concentration gradient. active transport drives molecules across a membrane from a region of lower concentration to a region of higher concentration. this process, shown in figure 5.1, uses transport proteins powered by chemi- cal energy.

ok yes, but what is the question? as soon as you ask the actual question i will answer it. : )

"it built up in the atmosphere"

i think thats it, idk, i tried looking for this exact q& a for grad. and idk if i got this question right or sorry if im wrong