We use a dichotomous key to figure out what kinds of organisms were related to in the past. i'm not ver confident in explaining how it works so you might want to look online.
Most plants only need carbon dioxide so they only need humans
He is right, it’s A. loss of Biodiversity.
No I believe thats the other way around as in photosynthesis. For say water falls on the leaf then the leaf seperates the water from oxygen to give us the oxygen then it starts over to become a cycle.Life
