1. All members of an ecological community need __________ to survive.

2. A __________ is a member of the human body's ecological community. If we have too many of them, we usually get sick.

3. Iron __________ is a natural resource that helps make steel. It is not renewable.

4. A _________ is Earth's only renewable, recyclable, biodegradable resource.

5. The environment is our ecological __________. It is called "oikos" in Greek.

7. This Greek word means "the study of ". Along with #15 across, it helps make our word "ecology".

9. The success of the _________ depends on the success of the individuals that are part of it.

10. Individuals change in response to _________ information from their environment.

1. The conditions or elements that surround an ecological community or its members are called the __________.

6. This bird hunts mice at night. Foresters work hard to protect it in California's forests.

8. The small rodents that are a food for owls are __________.

11. The study of how plants and animals interact with their environment is _________.

12. For a whale, the __________ is its ecological community.

13. A famous California naturalist was John __________.

14. An ecological community changes because of changes in its members. We call this process "natural __________".

15. The Greek word for "house" is __________. Together with #7 down, it helps form our word "ecology".