Abiotic factors vary in the environment and determining the types and numbers of organisms that exist in that environment. Factors which determine the types and numbers of organisms of a species in an ecosystem are called limiting...

Gives basic information about the community that forms between living and non-living factors that function together in an ecosystem. [47 secs]

Students define and provide examples of abiotic and biotic factors of different ecosystems. Then they investigate the importance of abiotic factors and physical processes within ocean ecosystems.

Explore biotic and abiotic factors that can influence the growth of populations of organisms in this interactive tutorial.