Ecology Study of organisms and their interaction with each other and the environment

Levels

Biosphere Everywhere on the planet that supports life

Biome Group of ecosystems with same climate and dominant communities

Ecosystem Biotic and abiotic factors in a particular area

Community All living things in an ecosystem

Population One species in an ecosystem

Niche Role or job of an organism

Habitat Place where organism lives

Environment Affected By: Abiotic Factors Nonliving Ex. Rocks, water, temp. Biotic Factors Living or once living Ex. Deer, dead leaves

Symbiosis Relationship between two species living closely together Three types

1. Parasitism One benefits, other is harmed

2. Mutualism Both benefit

Commensalism One benefits, other not affected