Name some abiotic factors

Water sunlight oxygen soil (S2WO)

Name levels of organization

Population communities and ecosystem

Which is the smallest level of organization

A single organism

Which is the greatest level of organtization

The entire ecosystem

Methods to determine size and population

Direct observation, indirect observation, sampling, mark, and recaptured studies

Name some limiting factors

Food water space and weather conditions

3 mayor types of interaction among organisms

Competition, predation, symbiosis

3 types of symbiotic relationship

Mutualism, commensalism, and parathism

How can population density can be determined

number of individualism divided by the unit area