A saltwater ecosystem where breaking waves provide oxygen and nutrients is the ____________________.

• Inter-tidal Zone
• Near-shore Zone
• Deciduous Forest
• Estuary

Name 2 plants or animals that can be found in freshwater ecosystems only.

• Sharks & Oysters
• Crabs & Starfish
• Whales & Plankton
• Ducks & Crawfish

A brackish water ecosystem:

• Has many pollutants
• Is always above 70 degrees
• Is salt and freshwater mixed
• Has few currents and the water barely moves

Which two bodies of water are saltwater?

• Oceans & Lakes
• Oceans & Seas
• Ponds & Streams
• All of the above

A saltwater ecosystem with very deep water is the ___________________.

• Inter-tidal Zone
• Open-ocean Zone
• Near-shore Zone
• Estuary

An _________ is were a freshwater river empties into the ocean.

• Open-Ocean Zone
• Estuary
• Sea
• None of the above

List the 3 ocean zones from shallowest to deepest.

• Inter-tidal Zone, Near-shore Zone, & Open-Ocean Zone
• Open-ocean Zone, Inter-tidal Zone, & Near-shore Zone
• Near-shore Zone, Inter-tidal Zone, & Open-Ocean Zone
• Mrs. Cole :)

Name the 3 types of water ecosystems.

• Saltwater, estuary, & freshwater
• Saltwater, freshwater, & regular water
• Drinking water, bathing water, & cooking water
• Freshwater, Brackish water, & Salt water

Why aren't plants able to survive below a depth of 200 meters?

• It is too cold down there
• There is no sunlight at that depth
• The plants cannot anchor themselves in the shifting sands.
• The water pressure is too great

True or false: An estuary changes from salt to freshwater as tides rise and fall.

• True
• False