Freshwater/Marine Review

What are the two main groups of aquatic biomes?

• saltwater and freshwater

• wetlands and ponds

• marine and estuary

• ocean and lakes

The Epipelagic Zone, where most organisms live in the ocean, is from the surface to 200 meters down.

• True

• False

Freshwater biomes have a low salt content

• True

• False

Which of these is NOT a freshwater biome?

• coral reef

• ponds

• lakes

• wetlands

Estuaries

• are always saltwater ecosystems.

• are always freshwater ecosystems.

• are ecosystems where both fresh water and salt water are present.

• prevent the development of salt marshes.

A large body of moving fresh water is a:

• Stream

• Lake

• Spring

• River

The amount of salt found in water is -

• temperature
• salinity
• pollution
• clarity

Most of the Earth's water is in

• salty oceans
• freshwater lakes
• freshwater ponds
• glaciers

What are tiny organisms that float near the surface of the water?

• plankton
• organisms
• abiotic factor
• insects

True of False: The temperature of the ocean water decreases as the depth of the water increases.

• True
• False