1. ENVIRONMENTS AND ECOSYSTEMS

2. An organism’s ENVIRONMENT is all the things around it.
Organisms rely on their environment to satisfy their basic needs.

3. An ECOSYSTEM is
all the living
and
nonliving things
in a certain area.

4. The place in which a certain kind of organism lives is a HABITAT

5. Think of a habitat as a home.
A rotting log might be a habitat for an insect.
A tree might be a habitat for a bird.

6. A COMMUNITY is all the living things found in an area.

7. DECOMPOSERS – Mushrooms, fungi, and earthworms
Living thing interact with, or affect, one another.
PRODUCERS – Plants
CONSUMERS – Animals
DECOMPOSERS – Mushrooms, fungi, and earthworms

8. PRODUCERS – Plants
They use the SUN and CARBON DIOXIDE to make food.

9. CONSUMERS – Animals They eat other living things
Herbivores – eat plants
Carnivores – eat meat
Omnivores – eat both

10. DECOMPOSERS – Mushrooms, fungi, and earthworms
They eat dead organisms and break them into tiny pieces. These pieces become nutrients in the soil that plants use to grow.

11. A food chain is a series of organisms that get food from one another.
All food chains start with a plant.

12. Many food chains together create a
FOOD WEB.

13. If an animal or plant disappears from the food web,
It will affect all other organisms in the food web.

14. PREDATORS PREY are animals that eat other animals.
are the animals that predators eat.

15. PEOPLE can cause changes in an ecosystem.
ANIMALS can cause changes in an ecosystems.
NATURAL DISASTERS can cause changes in an ecosystem.

16. People need the environment to survive.
However, we affect the environment in many negative ways.

17. POLLUTING LAND DEVELOPMENT MINING LOGGING LANDFILLS ROADS
Ways we affect the environment:
POLLUTING
LAND DEVELOPMENT
MINING
LOGGING
LANDFILLS
ROADS

18. A substance that causes
pollution is called a
POLLUTANT.
They can be put into the air,
ground, or water.
They can harm or kill
plants and animals.