1. Living Earth
Chapter 24, Section 1

2. The Biosphere Biosphere Part of Earth that supports life. Includes:
upper part of the crust
all water
the atmosphere

3. Ecosystems
Ecosystem
All the organisms living in an area and the nonliving parts of their environment.

4. Ecosystems
Ecology
Study of the interactions that occur between organisms and their environments.

5. Ecosystems
Ecologist
Scientist who studies ecology.

6. Populations Population
All the organisms in an ecosystem that belong to the same species.

7. Populations All the populations living in the same ecosystem.
Community

8. Habitat
Habitat
The place in which an organism lives.