Forests and other green plants uses carbon dioxide in photosynthesis thus lowering its amount in the atmosphere. In assumption, we can claim that in the ice ages, the low level temperatures may have caused the carbon dioxide levels to neutralize over these phenomenons, also to note that there were less oxygen-breathing organisms and higher carbon-dioxide dependent performing photosynthesis.
A molecule is considered to be a saturated fat when there is a single bond present.
Earth's Energy balance describes how the incoming energy from the sun is used and returned to space. If incoming and outgoing energy are in balance, the earth's temperature remains constant. So it’s B
I can’t see the image but CO2 is produced in the mitochondria during respiration
The mitochondria looks like this:
Although they are radically symmetrical,echinoderms are more closely related to human than to a jellyfish because they are biltarian.
