The answer is Algae and Photosynthesis Hope this helps! ;D
Ummm be more specific with the question
So the important factors are air pressure, temperature, and humidity. The base it is normal and easy to breathe. As you go towards the summit the temperature drops, air density and pressure is low; air is thin, and the humidity is also low. This results in hyperventilation as the air pressure is low. Also there is a chance of getting Hypoxia. The environment is harsh.
It binds itself to the receptors present on the surface of the cell membrane, which activates the enzymes present inside the cell.