This tree species was preserved as a fossil in the Arizona desert. The species is now extinct. Describe what the environment was like when the tree lived and how it is different now. Then, infer why this type of tree and other living things that lived with it are extinct.

tbh i think it's wrong but here's this

I’d assume the environment was dry and hot because it is a desert, but I believe that there was more moisture when this tree was still alive. It got drier and the trees started to die because there was not enough water. Because of that, they are now extinct.  

the correct answer, according to e2020, is the second choice there is an occluded front in region a and a cold front in region b.