We can use rivers to get fresh water
<span>Mass extinctions when at least half of all species die out. The largest mass extinction event occurred around 250 million years ago, when perhaps 95 % of all species went extinct. Now new ones appeared.
It was during Cretaceous.
Hope this helps !
Photon</span>
Answer:
b.
Explanation:
if you think about it,it actually makes a lot of sense as the years go by people start to use agriculture a lot less than we used to.
pls mark brainliest
