What is the atmosphere? Where does weather occur?

What does the atmosphere protect us from? Which layer?

What would happen if we didn't have the protective layer in the previous question?

What happens in the mesosphere?
What is made in the thermosphere?

Which statements correspond to cellular respiration? co2 diffuses passively into the cell. co2 diffuses passively out of the cell. co2 must be pumped out of the cell. o2 diffuses passively when produced inside the cell. o2 diffuses passively when converted to co2. o2 is pumped in and forces co2 out.

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

Which of the following is not a food produced in rainforests? a) coffee b) cocoa c) avocados d) wheat