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Across 3. an organism that makes its own food 7. interaction in which one species benefits and the other is neither harmed nor benefited 8. an organism that can produce its own food using light, water, carbon dioxide, or other chemicals 9. represents feeding relationships within a community 10. consists of all the food chains in a single ecosystem

Down 1. relationship in which both species are mutually benefited 2. relationship between the two living species in which one organism is benefitted at the expense of the other 4. consisting of living organisms 5. breaks down the cells of dead plants and animals into simpler substances 6. an organism that eats other plants or animals for energy and nutrients