Which picture represents a cast?

its number 1

Explanation:

because the fly is stuck in amber

and the snail shell is in mold and is filled up

and number 2 is not cast

this would be a math

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.