Deforestation because without trees and plants, they are nothing to convert CO2 into Oxygen.
The anterior pituitary receives signalling molecules from the hypothalamus, and in response, synthesizes and secretes seven hormones. The posterior pituitary does not produce any hormones of its own; instead, it stores and secretes two hormones made in the hypothalamus.
I believe the answer is C
This solar energy conversion process is known as photosynthesis. ... At this time, the oxygen level was approximately 10% of its present atmospheric concentration. ... The presence of ozone enabled organisms to develop and live on the land.
About 33 because you are just sitting there playing video games the 33 calories burned are coming from sweat because you are probably sweating from an intense game.
