Aquatic Ecosystems, Ch.7

Which is NOT a freshwater ecosystem?

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

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

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

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

Estuaries form where 

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

Which of the following ecosystems would not be classified as a freshwater ecosystem?

• pond
• open ocean
• river
• lake

Which is a freshwater ecosystem?

• lake
• estuary
• salt marsh
• ocean

What would most likely happen if an ecosystem no longer received sunlight?

• The number of herbivores would increase
• The number of plants would increase
• all organisms would adapt
• All living organisms would eventually die

What aquatic biome is characterized by flowing fresh water?

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

True/False - Wetlands are being drained for agricultural purposes.

• True
• False

What is the ocean floor called?

• Plankton Zone
• Littoral Zone
• Benthic Zone
• Davy Jones' Locker