Introduction to Ecology

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Across 3. obtains energy and nutrients by consuming other organisms; consumers 4. process where one species feeds on another species 6. one species benefits; the other neither is hurt nor benefits 10. over time, new communities may gradually replace existing ones 12. a primary consumer that only eats plants 14. a type of symbiotic relationship- where one species eats its host 15. shows the energy flow through organisms in a community; ex: sunlight-plant-caterpillar-bird-fox

Down 1. the number of individuals in a population that an environment can support 2. a group of organisms of the same species that live in a particular area 5. each step in the transfer of energy and matter in an ecological community 7. foodchains combine to form a ... 8. producer; a plant or other organism that convert's the sun's energy or inorganic substances into energy rich compounds such as glucose 9. a type of symbiotic relationship between two species where they both benefit each other 11. a collection of populations that interact with each other in a given area 13. a large group of similar ecosystems such as desert or chaparral or grassland

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