Aquatic Ecosystems

Salinity refers to

• how many plants are in the water

• how many organisms live in the water

• how much salt in is water

All of the following are groupings of water organisms except

• plankton

• nekton

• benthos

• permafrost

Organisms that live on the bottom of aquatic ecosystems are

• benthic

• littoral

• nektonic

All are freshwater ecosystems except

• marshes

• lakes

• eustary

• rivers

All of the following are salt water ecosystems except

• eustary

• salt marshes

• coral reefs

• ponds

Wetlands are important to fisheries in the U.S. because

• easy place to fish

• breeding ground for insects eaten by fish

• most desirable species of fish

• fish use these areas to feed and spawn

Which of the following is a way humans impact wetlands

• drain to create farmland

• clear to build housing

• use as landfills

• all of the above

Which is NOT a type of aquatic ecosystem?

• ocean
• estuary
• monastery
• wetland

Temperature, sunlight and oxygen are examples of ____ factors.

• abiotic
• biotic

Tags

NGSS.MS-LS2-3

What are areas where freshwater meets saltwater called?

• wetlands
• estuaries
• coastal byways
• intertidal zones

Tags

NGSS.MS-LS2-3