Chapter 1 ‐ Interactions of Life
Section 1 ‐ Living Earth
A. Biosphere—the part of Earth that supports life
1. Made up of: the top portion of Earth’s crust, all the waters on Earth’s surface,and the surrounding atmosphere
2. Made up of different environments that are home to different kinds of organisms
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B. Ecosystem—all the organisms living in an area and the nonliving parts of their environment
1. Ecology is the study of interactions that occur among organisms and their environment.
2. A population is made up of all the organisms in an ecosystem that belong to the same species.
3. A community is all the populations in an ecosystem.
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C. Habitat—the place in which an organism lives
1. Must provide the kinds of food, shelter, temperature, and moisture the organism needs to
survive
2. Example: trees are the woodpecker’s habitat
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DISCUSSION QUESTION:
What are some of the elements of your ecosystem? Possible answers: people, dogs, squirrels, grass, trees, water, sunlight, air, soil
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Test your knowledge of section 1 in a self‐check quiz!
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Attachments
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