Eutrophication

In eutrophication, what does 'algal bloom' refer to?

• The rapid increase in the number of bacteria

• The rapid increase in the number of plants

• The rapid decrease in the number of fish

• The rapid increase in the amount of nitrates in the river

Tags

NGSS.MS-LS2-3

NGSS.MS-ESS3-4

The long term effects of a hypoxic/dead zone includes all of the following except for

• Fisherman may struggle to catch any fish.

• The crops of farmers stop growing.

• The health of the fish population declines.

• There is an increase in the population of decomposers such as bacteria.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

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 increase.

• causes bacteria populations decrease.

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-3

Too much of a good thing, such as _____________ and _________________nutrients in the lakes and ponds can cause an imbalance resulting in eutrophication

• oxygen

• phosphorus

• xenon

• nitrogen

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-3

The green plants on the surface of the lake turned out the be algae! There is a sudden increase in the rate of growth of the algae. What would happen next?

• The algae continue to grow due to excess nutrients, and some of the algae die

• The algae would stop growing

• The algae are not affected by the fertilisers

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-LS2-3

When too much ____________grows, it eventually covers the surface of the water.

• bacteria

• algae

• fertilizer

• waste

Tags

NGSS.MS-LS1-5

NGSS.MS-LS1-6

Which of the following is NOT a source of nitrates and phosphates into a river?

• Fertilizers

• Animal waste

• Sewage/

  Wastewater

• Burning fossil fuels

Tags

NGSS.MS-LS2-1

Eutrophication can happen in a river or lake

• TRUE

• FALSE

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-3

NGSS.MS-LS2-2

Which of the following is a primary cause of eutrophication in aquatic environments?

• Excessive use of fertilizers in agriculture

• Increased levels of carbon dioxide in the atmosphere

• Deforestation in nearby areas

• Overfishing in the water body

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-1

NGSS.MS-ESS3-4

What is a common consequence of eutrophication in lakes and rivers?

• Increased biodiversity

• Improved water clarity

• Decreased oxygen levels

• Enhanced fish population growth

Tags

NGSS.MS-LS2-4

NGSS.MS-LS2-5