Select all the correct answers.

Question

In what two ways is runoff harmful to human beings?
It results in the flooding of vast areas.
It increases the number of car accidents.
It spreads disease-carrying organisms.
It removes important nutrients from the soil.
It contaminates drinking water supplies.

Answer 1

The correct answers regarding how runoff is harmful to human beings are:

1. It spreads disease-carrying organisms.
2. It contaminates drinking water supplies.