Not enough oxygen
rainforests will turn into desserts like the Sahara dessert which use to be a tropical place.
Answer:
A glacier is a river of ice that moves downwards from high mountains
the answer is C ik that because it said it was right on my test
In the west, the Atlantic, east, Atlantic is connected to the pacific, and the Arctic is in the both and south. I hope it somewhat helped. Sorry if I didn’t :)