Freshwater Ecosystem

• River

• Stream

• Lake

• Pond

Tags

NGSS.MS-ESS2-1

NGSS.MS-ESS2-4

• River

• Lake

• Stream

• Pond

Tags

NGSS.MS-ESS2-4

• River

• Stream

• Lake

• Pond

Tags

NGSS.MS-ESS2-4

• River

• Lake

• Stream

• Pond

Tags

NGSS.MS-ESS2-4

The open water zone of a lake where most photosynthesis occurs

• Profundal

• Limnetic

• Littoral

• Benthic

Tags

NGSS.MS-LS1-6

Eutrophic lakes are characterized by...

• low nutrients, low oxygen

• low nutrients, high oxygen

• high nutrients, low oxygen

• high nutrients, high oxygen

Which biotic factor is NOT important for freshwater ecosystems?

• Salinity

• Soil quality

• Dissolved oxygen

• Temperature

What statement is correct about streams?

• They are high in nutrients.

• They have a high level of dissolved oxygen.

• They have a high salinity.

• They appear muddy in colour.

What freshwater ecosystem have dams added for electricity generation?

• Stream

• River

• Pond

• Lake

What statement is true about ponds?

• Sunlight cannot reach the bottom of ponds.

• Ponds are bigger than lakes.

• Ponds contain freshwater that is not flowing downhill.

• Water in ponds is deep & cold.