Question

Which is not a negative effect on the earth system resulting from the construction of a dam?

a.) causing the flooding of a nearby forest
b.) providing irrigation water for nearby farmlands
c.) blocking the migration of spawning fish
d.) eliminating a fish species that needs swiftly moving water

Answer 1

its definitely B. the rest of them have negative outcomes and its asking which isn't a negative result.

Answer 2

providing irrigation water for nearby farmlands. hope this helps