Which of the effects of irrigation on the world’s environment is a criticism of using reservoirs?

Question

1) Groundwater can be contaminated by plastic.
2) Flooding can potentially occur and harm wildlife and land.
3) Crops can be contaminated and harm the people who consume them.
4) Waste byproducts can contaminate land when not safely disposed of.

Answer 1

4) Waste byproducts can contaminate land when not safely disposed of.