Chapter 20- The Earth's Ecosystems

Question 0

Savanna

Answer 0

A grassland that often has scattered trees and that is found in tropical and subtropical areas where seasonal rains, fires,and drought happen

Question 1

Biome

Answer 1

A large region characterized by a specific type of climate and certain types of plant and animal communities.

Question 2

Desert

Answer 2

A region that has little or no ;plant ife, long periods without rain, and extreme temperatures; usually found in hot climates

Question 3

Tundra

Answer 3

A treeless plain found in the Artic, Antarctic or on the tops of mountains that is characterized by very low winter temperatures and short, cool summers

Question 4

Plankton

Answer 4

The mass of mostly microscopic organisms that float or drift freely in freshwater and marine enviroments

Question 5

Estuary

Answer 5

An area where fresh water from rivers mixes with salt water from the ocean

Question 6

Littoral Zone

Answer 6

The shallow zone of a lake or pond where light reaches the bottom and nurtures plants

Question 7

Open-Water Zone

Answer 7

The zone of a pond or lake that extends from the littoral zone and that is only as deep as light can reach

Question 8

Deep-Water Zone

Answer 8

The zone of a lake or pond below the open-water zone, where no light reaches

Question 9

Wetland

Answer 9

An area of land that is periodically underwater or whose soil contains a great deal of moisture

Question 10

Marsh

Answer 10

A treeless wetland ecosystem where plants such as grasses grow

Question 11

Swamp

Answer 11

A wetland ecosystem in which shrubs and trees grow