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Chapter 3 - The Biosphere
Across
2. organism that feeds on plant and animal remains and other dead matter
3. organism that can capture energy from sunlight or chemicals and use it to produce food from inorganic compounds; also called an autotroph
7. process of converting nitrogen gas into ammonia
11. group of similar organisms that can breed and produce fertile offspring
12. group of ecosystems that have the same climate and dominant communities
13. group of individuals of the same species that live in the same area
14. rate at which organic matter is created by producers in an ecosystem
15. process by which some organisms, such as certain bacteria, use chemical energy to produce carbohydrates
Down
1. step in a food chain or food web
2. conversion of nitrates into nitrogen gas
4. loss of water from a plant through its leaves
5. part of Earth in which life exists including land, water, and air or atmosphere
6. scientific study of interactions among organisms and between organisms and their environment
8. organism that obtains energy from the foods it consumes; also called a consumer
9. assemblage of different populations that live together in a defined area
10. collection of all the organisms that live in a particular place, together with their nonliving environment