Freshwater Unit

Lake Baikal is...

• The dirtiest lake in the world

• Oligotrophic

• The deepest lake in the world

• The oldest lake in the world

What is the definition of eutrophic?

• A body of water that has large amounts of nutrients, shallow, lots of algal growth, low oxygen

• A body of water that has small amounts of nutrients, is deep, and more clarity.

• A body of water used for drinking water

• A body of water used for waste management

Tags

NGSS.MS-LS2-3

Only ____% of the Earth's water is freshwater.

Tags

NGSS.MS-ESS2-4

What does it mean if a body of water is oligotrophic?

• The lake is murky, gross, and full of algae.

• The lake is cloudy, but it isn't super dirty or super clean.

• The water is clear with little to no nutrients.

What is the definition of freshwater?

• Water with large amounts of dissolved salts and solutes.

• Water with lots of plant life present.

• Water with minimal amounts of solutes and dissolved salts.

How much freshwater is used for agriculture?

• 90%

• 40%

• 70%

• 60%

_____% of the population is affected by water scarcity.

• 60%

• 20%

• 50%

• 40%

Tags

NGSS.MS-ESS2-4

NGSS.MS-ESS3-1

NGSS.MS-ESS3-4

_____ million pounds of soil are released by Iowans into the Gulf of Mexico dead zone.

Tags

NGSS.MS-LS2-4

Iowa farmers use __x the recommended amount of fertilizer.

• 2

• 4

• 5

• 3

when the water has little to no nutrients, is deep, and has more clarity

• dead zone

• oligotrophic

• hypoxia

• eutrophic