1. Chapter 6 – Changes in Ecosystems
Lesson #1 – How do Ecosystems Change?
Lesson #2 – How do Species Change?
Lesson #3 – How do Changes Cause More Changes?

2. Lesson #1 - Questions What can cause changes in environments?
What affect did zebra muscles and garlic mustard plants have on native species?
What type of rain is harmful to the environment?
What environmental affect would recycling help?

3. Animals Change Ecosystems
Organisms can cause changes in ecosystems.
Some changes can help or harm the environment.
Beaver dams change the environment.

4. New Species in Environment/People Changing Environment
People make physical changes to ecosystems.
People change ecosystems both accidentally and on purpose.

5. Garbage and Pollution
Garbage is placed in landfills and pollutes the ground.
Pollution causes acid rain that can hurt plants and animals.

6. Ecosystems can be changed by humans as well as forces of nature.
True
False

7. True
False
When people introduce new animals or plants into an ecosystem it changes.

8. The garbage in landfills decays quickly.
True
False

9. Acid rain is caused by water pollution.
True
False

10. Lesson #2 - Questions Describe heredity.
Is the color of a flamingo’s feathers an inherited trait, or acquired?
Name two different adaptations.
Why would there be more competition among organisms if an ecosystem changes?

11. Inheriting DNA
Hereditary is the process by which offspring receive half of their genes from each parent.
Because offspring inherit traits from both parents, they differ from both parents.

12. Traits That Are Not Inherited
Not all traits are a result of DNA
Flamingos are born white and turn pink with eating shrimp and other foods
Soil also affects plant appearance

13. Adaptations
An adaptation is a trait that allows an organism to better fit into an ecosystem.
Structural adaptations are changes in body parts that help animals survive.

14. Behavioral Adaptations
Are inherited adaptations that help animals survive.
They affect how animals behave around other animals.

15. Every animal inherits the same amount of genes from each parent.
True
False

16. The environment does not affect a species appearance.
True
False

17. A hummingbirds long beak is a structural adaptation.
True
False

18. Adaptations to an environment can help a species live longer.
True
False

19. Lesson #3 - Questions What adaptation allows hawks to live in cities?
Name a reason that humans might want to limit antibiotics and pesticides?
What happens to a species when it becomes extinct?
What might you look for to see if a species used to live on Earth?

20. How do changes cause more changes?
Some organisms change their behavior in response to a change, such as the kinds or numbers of other organisms in their ecosystems.
Pesticides are poisons that kill insects.

21. How do changes cause more changes?
When changes occur in an ecosystem, some organisms migrate to a place where conditions are more favorable.
Species that can’t move or adapt to the changes may become extinct.

22. Organisms adapt to harmful changes in their ecosystems.
True
False

23. Once organisms lose their habitats, they can never find new homes.
True
False

24. An extinct species has limited numbers of its kind.
True
False

25. Poisons in ecosystems can travel through the food chain.
True
False