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Question 1

estuary

Answer 1

found where the fresh water of a river meets the salt water of an ocean

Question 2

intertidal zone

Answer 2

located on the shore between the highest high-tide line and the lowest low-tide line

Question 3

neritic zone

Answer 3

region of shallow water found below the low-tide line and extending over the continental shelf

Question 4

producer

Answer 4

an organism that can make its own food

Question 5

consumer

Answer 5

an organism that obtains energy by feeding on other organisms

Question 6

herbivore

Answer 6

consumers that only eat plant

Question 7

carnivore

Answer 7

consumers that only eat animals

Question 8

omnivore

Answer 8

consumers that eat both plants and animals

Question 9

scavenger

Answer 9

a carnivore that feeds on the bodies of dead organisms

Question 10

decomposers

Answer 10

break down biotic wastes and dead organisms and return the raw materials to the ecosystem

Question 11

food chain

Answer 11

a series of events in which one organism eats another and contains energy

Question 12

food web

Answer 12

consists of many overlapping food chains in an ecosystem

Question 13

evaporation

Answer 13

the process by which molecules of liquid water absorb energy and change to a gas

Question 14

condensation

Answer 14

the process by which a gas changes to a liquid

Question 15

precipitation

Answer 15

rain, snow, sleet, or hail

Question 16

nitrogen fixation

Answer 16

the process of changing free nitrogen into a usable form of nitrogen

Question 17

climate

Answer 17

the average annual temperature and amount of precipitation in an area that determines it biome

Question 18

biome

Answer 18

a group of ecosystems with similar climates and organisms

Question 19

desert

Answer 19

an area that receives less than 25 centimeters of rain per year.

Question 20

rain forest

Answer 20

forests in which large amounts of rain fall year-round

Question 21

emergent layer

Answer 21

the tallest layer of the rain forest

Question 22

canopy

Answer 22

up to 50 meter tall trees form a leafy roof called the canopy

Question 23

understory

Answer 23

below the canopy, trees and vines that are about 15 meters tall form the understory

Question 24

grassland

Answer 24

an area that is populated mostly by grasses and other non-woody plants

Question 25

deciduous trees

Answer 25

trees that shed their leaves and grow new ones each year

Question 26

boreal forest

Answer 26

dense forests found in upper regions of the Northern Hemisphere

Question 27

coniferous trees

Answer 27

trees that produce their seeds in cones and have leaves shaped like needles

Question 28

tundra

Answer 28

extremely cold and dry

Question 29

permafrost

Answer 29

frozen soil in the tundra

Question 30

biogeography

Answer 30

the study of where organisms live and how they got there

Question 31

continental drift

Answer 31

the movement of the continents

Question 32

dispersal

Answer 32

the movement of organisms from one place to another

Question 33

exotic species

Answer 33

an organism that is carried into a new location by people