Ecology

Study of organisms and their interaction with each other and

the environment

Levels

Biosphere

Everywhere on the planet that supports life

BiomeGroup 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