Human Impact Quiz 2

which of the following might count as water pollution?

• water that is too hot

• water that has too much dissolved oxygen

• water that doesn't have enough phosphate

• water that doesn't have enough nitrate

Why do algae blooms happen?

• there are too many nutrients in the water

• there are too many fish in the water

• there is not enough turbidity in the water

• all of these options

water pollution can be

• biological

• temperature

• physical

• all of these

water with a pH of 14 is

• acidic

• basic

• neutral

• safe to drink

Nutrients cause what effect in our creeks and rivers?

• limestone to disappear.

• dissolved Oxygen levels to rise.

• algae to grow more rapidly.

• bacteria populations to decrease.

Water pollution occurs when:

• Harmful substances enter a water supply

• Industries dispose of waste safely and correctly.

What are the main sources of water pollution?

• Agriculture (farming) and industry

• Snails in water

What can happen to fish when there is not enough oxygen in the water?

• They can suffocate

• They can't float

• Nothing. Fish don't need oxygen.

What is the ph level of acid rain?

• 4

• 3

• 1

• 6

What can acid rain pollute?

• Trees

• Water

• Air

• Clouds