Chapter 7

Question 1

wetland

Answer 1

areas where land is perodically underwater

Question 2

plankton

Answer 2

orgnanisms that cant swim against currents, called drifters

Question 3

nekton

Answer 3

free swimming organisms (ex: fish, whales)

Question 4

benthos

Answer 4

bottom-dwellers (ex: mussles, worms, barnacles)

Question 5

littoral zone

Answer 5

near the shore

Question 6

benethic zone

Answer 6

bottom of pond or lake

Question 7

eutrophication

Answer 7

an increase in the amount of nutrients

Question 8

estuary

Answer 8

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

Question 9

salt marsh

Answer 9

formed by loads of mineral rich mud that rivers deposited in estuaries

Question 10

mangrove swamp

Answer 10

dense growths of mangrove trees in swampy areas

Question 11

barrier island

Answer 11

islands that help protect the mainland and costal wetlands from storms and ocean waves. often provides habitat for wildlife. often parrallel to sandy shores

Question 12

coral reef

Answer 12

limestone ridges built by tiny coral animals called coral polyps and the algae that lives inside them