Chapter 7 Key Terms

Question 1

Wetland

Answer 1

Ecosystem that is periodically underwater.

Question 2

Plankton

Answer 2

Organisms that can’t swim so they drift with the current of the ocean.

Question 3

Nekton

Answer 3

Free swimming organisms such as Fish and Whales

Question 4

Benthos

Answer 4

Bottom dwellers such as mussels, worms, and barnacles

Question 5

Littoral zone

Answer 5

Zone in lakes and rivers which has the most abundance of life.

Question 6

Benthic zone

Answer 6

Bottom of a pond or lake, bottom dwellers and decomposers live here.

Question 7

Eutrophication

Answer 7

An increase in the amount of nutrients in an ecosystem.

Question 8

Estuary

Answer 8

An area in freshwater mixes with salt water from the ocean.

Question 9

Salt Marsh

Answer 9

In Estaurys there is a mineral rich mud, serves as a nursery for fish and reptiles.

Question 10

Mangrove Swamp

Answer 10

Dense growths of Mangrove trees in swampy areas.

Question 11

Barrier Island

Answer 11

Run parallel to sandy shores, helps protect ecosystem against whether and other natural problems.

Question 12

Coral Reef

Answer 12

Limestone ridges built by tony coral animals, inhabited by Coral Polyps and the algae that live inside them.