Ecological Hierarchy Levels

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The living organisms in an ecosystem interact with one another and with the nonliving factors in the environment.

The Sahara Desert

Ecological Hierarchy Levels

The community level focuses on the relationship between different species in a community. Predator and prey relationships play a large role in community-level analyses.

The lion and gazelle

Level 3: Community

Level 2: Population

A populatin contains a group of individual contains a group of individualsbelonging to one species an living in a specific geographical area, which interact with one another.

Pride of Lions

Level 1: Organism

The first level of the ecological hierarchy. This level examines how one organism interacts with its environment.

Example:

A Lion

Level 3: Ecosystem

Level 4: Biosphere

The biosphere represents the totality of all things on Earth, including their interactions. The biosphere includes all ecosystems on Earth and how they interact together.

Example

Earth