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Across 1. producer; a plant or other organism that convert's the sun's energy or inorganic substances into energy rich compounds such as glucose 4. a collection of populations that interact with each other in a given area 7. obtains energy and nutrients by consuming other organisms; consumers 9. one species benefits; the other neither is hurt nor benefits 12. a primary consumer that only eats plants 14. a type of symbiotic relationship- where one species eats its host 15. process where one species feeds on another species

Down 2. a group of organisms of the same species that live in a particular area 3. over time, new communities may gradually replace existing ones 5. each step in the transfer of energy and matter in an ecological community 6. the number of individuals in a population that an environment can support 8. foodchains combine to form a ... 10. a type of symbiotic relationship between two species where they both benefit each other 11. shows the energy flow through organisms in a community; ex: sunlight-plant-caterpillar-bird-fox 13. a large group of similar ecosystems such as desert or chaparral or grassland