Freshwater Ecosystems

Which is NOT a freshwater ecosystem?

• a river
• a lake 
• an estuary
• a stream

Tags

NGSS.5-ESS2-2

A wetland that contains a mixture of fresh water and salt water is called

• an estuary
• a stream
• a river
• a pond

Tags

NGSS.5-ESS2-2

phytoplankton are

• tiny autotrophic organisms in water
• large plants 
• tiny heterotrophic organisms in water
• large animals

Tags

NGSS.MS-LS2-3

An ecosystem where water covers the soil or water is near the surface of the soil is called

• a desert
• an ocean
• an estuary
• a wetland

Tags

NGSS.MS-LS2-3

Estuaries form where 

• a lake evaporates
• a river meets the sea
• a river becomes dammed
• a wetland becomes filled in

Tags

NGSS.MS-ESS2-4

Estuary water should have 

• less salt than the ocean
• more salt than the ocean
• no salt

Tags

NGSS.5-ESS2-2

What aquatic biome is characterized by flowing fresh water?

• Lakes/Ponds
• Mangroves Swamps
• Rivers/Streams
• Coral Reefs

Tags

NGSS.5-ESS2-1

Which watery biome has the lowest concentration of salt?

• freshwater
• ocean
• coral reef
• wetland

Which biome is pictured below?

• mangrove

• coral reef

• ocean

• freshwater

What are organisms living on, near, or in the sediment of lakes called?

• Nektonic
• Planktonic
• Limnetic
•  Benthic