Ecology - re013.k12.sd.us
____ 3. What do several different populations living together make? a. a biosphere b. an organism c. a community d. an ecosystem ____ 4. Which is an example of an abiotic element changing an area? a. introducing a new type of grass b. water flooding the area c. two species of birds competing d. algae growing on crabgrass ____ 5. ................
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