The answer is A: Mass extinction.
"Abrupt disappearance of many land and marine species" = extinction of many species.
Answer:
1st graph/diagram --> 2nd description (between top and bottom)
2nd graph/diagram --> 3rd description (bottom/last one)
3rd graph/diagram --> 1st description (top one)
I pick c. because I really can't see the screen very well.
Question 1: A.)
Question 2: i would say A.)
Question 3: C.)
Question 4: B.)
Question 5: A.)
Question 6: B.)
Hope this heslp