1. ____ is the study of living things in relation to one another and their environment. 2. An organism that feeds on other plants and animals is a ____. 3. A ____ is a living thing that makes food out of sunlight. 4. Using materials such as paper, glass, plastic, or metal over again is called ____. 5. The wise use of natural resources is called ____. 6. The physical place where an organism lives is its ____. 7. A ____ is a group of interlinked food chains. 8. A transfer of food energy from one organism to another is called a ____. 9. An interacting community of animals and plants that depend on each other and their environment for survival is called an ____. 10. Someone who studies how animals and plants interact with one another in the marine environment is called a ____.

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