Ch 6 Ecosystems And Change

Front 1

Population

Back 1

a group of organisms of one kind that lives in one location

Front 2

Community

Back 2

a group of populations that live together

Front 3

Competition

Back 3

a kind of contest among populations

Front 4

Adaptation

Back 4

a characteristic that helps an organism compete in an ecosystem

Front 5

Symbiosis

Back 5

a relationship between different kinds of organisms

Front 6

Predator

Back 6

an animal that eats other animals

Front 7

Prey

Back 7

animals that are eaten

Front 8

Succession

Back 8

a gradual change in the kinds of organisms living in an ecosystem

Front 9

Extinction

Back 9

the death of all the organisms of a species

Front 10

Pollution

Back 10

any waste product that damages an ecosystem

Front 11

Acid Rain

Back 11

a mixture of rain and acids from air pollution that falls to the Earth

Front 12

Habitat

Back 12

an area were an organism can find everything it needs to survive

Front 13

Conservation

Back 13

the use of less of a resource to make the supplies last longer

Front 14

Reclamation

Back 14

the process of cleaning and restoring a damaged ecosystem

Front 15

what do organisms compete for in an ecosystem

Back 15

space, shelter, water, and food

Front 16

describe three kinds of symbiosis

Back 16

--both animals benefit
--only one animal benefits, second one does not get hurt
--only one animal benefits but the second one gets harmed

Front 17

give examples of the three kinds of symbiosis

Back 17

---rhino and bird, ant and aphids, barrnacles on whales, remorces on sharks, bacteria on viruses that cause disease, tape worms and round worms, misletoe on tree

Front 18

what symbiotic relationship is most like a predator-prey relationship?

Back 18

parasitism

Front 19

what happens during primary succession?

Back 19

small hardy plants start to grow on bare rock. in time they create a layer of soil that supports more plants.

Front 20

what are pioneer plants?

Back 20

first plants to grow...lichens

Front 21

what is a climax community?

Back 21

when an ecosystem becomes stable and changes stop

Front 22

what are three causes of succession

Back 22

--climate
--organisms living in an ecosystem
--adding new plants or animals to an ecosystem

Front 23

how can ecosystems be destroyed

Back 23

forest fires, volcanos erupting and human actions

Front 24

how is secondary succession different from primary succession?

Back 24

primary succession is very slow and starts on rocks and secondary succession takes place where there was a previous ecosystem

Front 25

Why is secondary succession faster than primary succession?

Back 25

soil is already there and soil usually contains seeds

Front 26

what is the main result of primary succession and of secondary succession?

Back 26

primary brings life to bare rock while secondary repairs a damaged ecosystem

Front 27

what kinds of organisms are most likely to become extinct

Back 27

have a small population, live only in one place; problems adapting; eat only one food; have few defenses

Front 28

How can a change in climate cause extinction

Back 28

if there is no sunlight plants will die and then herbivores and most carnivores will die

Front 29

what resources can be polluted

Back 29

water; air; soil

Front 30

what are some of the main sources of pollution

Back 30

chemicals, burning fossil fuels, trash

Front 31

besides polluting ecosystems, in what other ways do people damage them?

Back 31

fencing them off, cutting down forests, filling in wetlands

Front 32

what are some ways that people damage ecosystems

Back 32

cutting down forests
filling in wetlands
putting up fences

Front 33

what are three ways that people can conserve resources

Back 33

reduce
reuse
recycle

Front 34

list six ways you can help protect ecosystems

Back 34

reduce
reuse
recycle
throw away garbage
use a bike instead of a car
don't pollute the waters

Front 35

why are wetlands important in reclamation

Back 35

they filter pollutants out of the water