Earths atmosphere traps energy from the sun. which is a direct result of the trapping of energy by earth's atmosphere? a. earth has weather b. earths atmosphere has 4 layers c. earth has moderate temperatures d. earth has gravity?

C. Because if the earth was not trapping energy from the sun then the temperature would be very cold and not constant.

What exactly do you mean 

It is the doctrine that the us had the right and duty to expand throughout north america. it just means they believed they had the right to expand westward and they did! they stated with the 13 colonies and then they kept moving gaining different territories throughout the years