2. Living things
+ Nonliving things
ECOSYSTEM

3. Living things in
an ecosystem are
called a…
COMMUNITY

4. Population
Population
+ Population
COMMUNITY

5. All energy in a
food web comes
from the…

6. What makes ecosystems different?
1 Amount of water
2
Amount of sunlight
3
Type of soil

7. Name the three members in
every community.
Producers
Consumers
Decomposers

8. What causes ecosystems to change?
Natural causes:
1
Drought
2
Disease
3
Fire
4
Overpopulation

9. What causes ecosystems to change?
Changes caused by humans:
1
Water pollution
2
Air pollution
3
Land pollution
4
Construction

10. How can humans help to prevent
changes in ecosystems?
1
Use resources wisely
2
Laws that control pollution
3
Clean up litter
4
Keep rivers and lakes clean