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1. a combination of food chains that integrate to form a network
2. of, relating to, or resulting from living things, especially in their ecological relations
4. any animal or any plant that feeds on animals
6. any organism capable of self-nourishment
7. an organism's position in a food chain
9. an organism, usually an animal, that feeds on plants or other animals.
11. an organism, as a plant, that is able to produce its own food from inorganic substances.
12. physical rather than biological; not derived from living organisms.
13. an animal that feeds on grass and other plants

1. the chain from a food source to the ultimate consumer
3. an organism that breaks down the cells of dead plants and animals into simpler substances
5. a depiction of the amount of energy in each trophic level of an ecosystem
8. an organism that cannot create it's own food
10. an organism that eats both plants and animals.