Freshwater Ecosystem

Eutrophication, an increase of nutrients from runoff, sewage and fertilizers are an environmental concern especially for ....

• rivers

• lakes

• wetlands

• all freshwater ecosystems

Tags

NGSS.HS-LS2-6

NGSS.HS-LS2-7

land covered by water part of the year are called ____. If they have trees and shrubs they are called ____

• wetland and marsh

• littoral and benthic

• wetland and swamp

• marsh and swamp

Land covered by water part of the year are called ____.

If they have grass with NO trees they are called ____

• wetland and marsh

• littoral and benthic

• wetland and swamp

• marsh and swamp

The amount of sunlight that can reach the bottom of the water is controlled by __

• depth of water

• flow of water

• salinity

• precipitation

Tags

NGSS.MS-ESS2-4

The main difference between a pond and a creek is caused by __

• depth of water

• flow of water

• salinity

• precipitation

Tags

NGSS.MS-LS2-3

The zone of a lake closest to shore is called the___

• littoral zone

• limnetic zone

• netric zone

• benthic zone

The zone of a lake where the water is too deep for rooted plants but there are phytoplankton and fish in the open water.

• littoral zone

• limnetic zone

• netric zone

• benthic zone

Which of the following is NOT a characteristics of headwaters of a river...

• originate from snow melts in the mountains

• more plant life found here than downstream

• more dissolved oxygen found here than downstream

• cold, shallow and moves swiftly

Where would you find cattails and reeds?

• Limnetic zone

• Littoral zone

• Profundal zone

• Benthic zone

Tags

NGSS.MS-ESS2-4

An increase in the amount of nutrients in a lake is known as

• nutrification

• algal blooms

• eutrophication

Tags

NGSS.MS-LS2-1

NGSS.MS-LS2-4