DCC50222_WATER POLLUTION

Pollution that come from a single source

• point

• non-point

Cannot easily be traced to the source of the pollution

• point source pollution

• non-point source pollution

Eutrophic water has lots of nutrients such as

• phosphates and nitrates

• sulfates and carbohydrate

• oxygen and glucose

• none of these

Most pollution that causes eutrophication is

• point source

• non-point source

This types of pollution comes from any heating of natural water that results from human activity

• thermal pollution

• biological pollution

• chemical pollution

Which of the following is an effect of an spill?

• many plants and animals die

• plant life increase

• the fishing industry improves

• the oil cleans the beaches

Why do algae blooms happen?

• there is not enough turbidity in the water

• there are too many nutrients in the water

• there are too many fish in the water

• all of these option

Thermal pollution has a harmful effect on aquatic environments because

• water has been circulated around power-plant generators

• it reduces the amount of dissolved oxygen in aquatic environments

• it increase the number of disease-causing organisms in aquatic environments

• it decreases the nutrient level in aquatic environments