After an extinction why do plants have to recover first?

They are the first life there is and ever was. In order for any animals to live, the need nutrients, and plants have nutrients. they are the beginning of the food chain and also produce the right chemicals for the animals to survive

i think a, hope it .

explanation:

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.