Chapter 15

Match it! Select the correct answer from the pull down...Good luck!

The role or job of an organism in the ecosystems is a .............

........... is the study of interactions among organisms and their environment.

The population ............ is the number of invdividuals in a population.

.......... is need for recyling matter.

........... factors are the non-living factors in an enviroment.

A .......... limits the number number of organisms in an environment.

Changing nitrogen gas to nitrogen in the soil is called ..............

............ is a very important abiotic factor and is the main compound in cell fluids.