Ch. 22-Ecosystems

Question 1

each organism in an ecosystem is one of these 3 energy roles

Answer 1

producer, consumer, decomposer

Question 2

producer

Answer 2

organism that makes its own food

Question 3

consumer

Answer 3

organism that obtains energy by feeding on other organisms

Question 4

herbivore

Answer 4

consumer that eats only plants

Question 5

carnivore

Answer 5

consumer that eats only animals

Question 6

omnivore

Answer 6

consumer that eats plants and animals

Question 7

scavenger

Answer 7

carnivore that feeds on dead organism

Question 8

decomposer

Answer 8

breaks down waste and returns materials to ecosystem

Question 9

food chain

Answer 9

series of events in which one organism eats another and obtains energy

Question 10

food web

Answer 10

many overlapping food chains in an ecosystem

Question 11

energy pyramid

Answer 11

shows amount of energy that moves from one feeding level to another in a food web

Question 12

in an energy pyramid, most is at _ and least is at_

Answer 12

bottom, top

Question 13

water cycle

Answer 13

continuous by which water moves from earth to atmosphere

Question 14

parts of water cycle

Answer 14

evaporation–>condensation–>precipitation–>evaporation

Question 15

carbon cycle

Answer 15

producers–> consumers–>decomposers–> atmosphere

Question 16

oxygen cycle

Answer 16

plants–>animals–>plants

Question 17

nitrogen cycle

Answer 17

air–>soil–>living things–>air

Question 18

nitrogen fixation

Answer 18

process of changing nitrogen into usable forms by bacteria

Question 19

biogeography

Answer 19

study of where organisms live

Question 20

one factor that affected how species are distributed is

Answer 20

the motion of earths continents

Question 21

continental drift

Answer 21

how the continents move with the plates move

Question 22

dispersal

Answer 22

movement of organisms from one place to another

Question 23

dispersal can be caused by

Answer 23

wind, water, living things

Question 24

exotic species

Answer 24

and organism carried into a new location by people

Question 25

factors that limit dispersal are

Answer 25

physical barriers, competition, climate change

Question 26

climate

Answer 26

typical weather pattern in an area over a long period of time