Ok last question i promise but who do ya´ll $imp for

Sat no calculator section question in the picture

Mount saint helen the great lakes and death valley are physical features of the earth which scientific term describes these features

The graph shows a trend in an ecosystem over time caused by increased pollution in the region. what can you conclude from the graph? a. there’s lower biodiversity among birds. b. there’s a higher reproductive rate among birds. c. there’s a significant decline in the number of producers. d. other types of animals were unaffected by pollution.