Eutrophication Questions

Eutrophication is...

• too few nutrients in a body of water.

• too many nutrients in a body of water.

• high acid levels in a body of water.

• high alkalinity levels in a body of water.

Eutrophication is caused by... (pick any which are true)

• a lack of plastic recycling.

• automobiles burning fossil fuels.

• over fertilizing farm fields.

• untreated seweage and effluent.

Chemicals that contribute to eutrophication include... (pick all that apply)

• dissolved Oxygen.

• phosphates.

• nitrates.

• sulfuric acid.

Tags

NGSS.MS-LS2-3

NGSS.MS-LS2-4

Nutrients cause what effect in our rivers?

• bacteria eat the nitrates.

• dissolved Oxygen levels rise.

• algae grow faster than usual.

• bacteria populations decrease.

When nutrient levels rise to high levels in a body of water, the effect on dissolved Oxygen levels is...

• a decrease.

• an increase.

• does not change.

When algae levels increase in a body of water, it...

• cuts off light to plants at the bottom.

• increases light to the plants on the bottom.

• causes dissolved Oxygen levels to increase.

• causes bacteria populations to decrease.

A good dissolved Oxygen reading for health in a river would be ...

• high parts per million.

• low parts per million.

True or False? Eutrophication can affect human health.

• True

• False

Ecological effects of eutrophication can include... (chose all which apply)

• decreased biodiversity

• fertilizer reduction

• new species invasion

• toxicity

Why is waste disposal technology for human waste important in reducing eutrophication?

• because aquatic life needs oxygen and sunlight

• because a buffer zone can help act as a filter

• because plastic damages the environment

• because untreated sewage contains a lot of nutrients