Ascientist wants to study the interaction of different birds in the southern park of a desert. what should the scientists do first?

i think that the best answer would be c.

tell me if im wrong : )

affects the water bodies: excessive use of fertilizers causes eutrophication. the fertilizers which are used on plants affect the quality of land on which it is used, further causing erosion of soil. the fertilizers used on plants contain harmful chemical fumes which affect the environment.