A 10 meter ramp helps you to move a 500 kg object up 1 meter. What was the MA of the ramp?

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

Food webs - transferring energy and matter from one level to another. here you see four food webs. one or more are incorrect. which food web(s) show the correct sequence of organisms, from start to top level consumer? a) a b) d c) c d) a and d

Body temperature is tightly regulated in mammals for example when external temperatures drop too much the body of a mammal responds by in order to its core temperature?