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ورقة عمل Changes affect organisms العلوم المتكاملة Inspire الصف الثالث

ورقة عمل Changes affect organisms العلوم المتكاملة Inspire الصف الثالث

OBJECTIVE: Identify factors that can change the ecosystem.

1. An environment can be changed by …………. and plants. which washes away soil
A. flood
B. drought

2.Invasive Species is an organism that is introduced into a new ecosystem by accident or on purpose.
A. True
B. False

3.Where do park rangers work?
A. At the zoo
B. State or national parks.

4. The ecosystem is made up of living and non- living things.
A. True
B. False

5. A beaver dam may change the ecosystem by:
A. Blocking the flow of water and causing floods
B. Preventing floods.

6. Trees give off carbon di oxide that humans need to survive.
A.True
B. False

7. How can humans affect the ecosystem negatively?
A. By cutting down trees
B. By Planting more trees.

8. When plants and animals cannot adapt to their environment, their population
A. Survives
B. grows bigger
C. dies off

9. Which is one-way humans endanger animals?
A. building national parks
B. cleaning environments where animals live
C. clearing rain forests

10. A farmer accidentally planted seeds of an invasive species in his field. How is the plant harmful to the environment?
A. it can grow slowly
B. it blocks sunlight and take nutrients that native plants need

11. Living things get ………… and  ………………. from their habitats.

12. Identify the change made by humans to the environment.
a. Cutting trees b. floods c. drought

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