Ch. 7 key terms

Question 1

wetland

Answer 1

sluggish waters of lakes and ponds, such as the lake and the moving waters of rivers and steams periodically underwater.

Question 2

plankton

Answer 2

Are organism that cannot swim against currents, so they are drifters

Question 3

nekton

Answer 3

are free-swimming organism, such as fish and whales

Question 4

benthos

Answer 4

are bottom-dweller, such as mussels, worms, and barnacles

Question 5

littoral zone

Answer 5

near the shore, aquatic life is diverse and abundant

Question 6

benthic zone

Answer 6

the bottom of a pond or lake, which is inhabited by decomposers, insect larvae, and clams

Question 7

Eutrophication

Answer 7

is an increase in the amount of nutrients

Question 8

estuary

Answer 8

is an area in which fresh water from a river mixes with salt water from the ocean

Question 9

salt marsh

Answer 9

where rivers deposit their load of mineral-rich mud

Question 10

mangrove swap

Answer 10

Dense growths of mangrove trees in swampy areas

Question 11

barrier island

Answer 11

At low tide, birds poke and prod aboutfor animals that have not attached themselves firmly enough or buried themselves deeply enough to escape the tidal pull

Question 12

coral beef

Answer 12

are limestone ridges built by tiny coral animals called coral polyps and the algae that live inside them.