Levels of Ecological Organization

1. Individuals

1.1. Definition -

1.1.1. a single organism capable of independent existence

1.2. Example -

1.2.1. A Human

2. Populations

2.1. Definition -

2.1.1. the total number of persons inhabiting a country, city, or any district or area

2.2. Example -

2.2.1. World Population

3. Communities

3.1. Definition -

3.1.1. an assemblage of interacting populations occupying a given area

3.2. Example -

3.2.1. The Town of Bellefonte

4. Ecosystems

4.1. Definition -

4.1.1. a system formed by the interaction of a community of organisms with their environment

4.2. Example -

4.2.1. An Aquarium

5. Biosphere

5.1. Definition -

5.1.1. the part of the earth's crust, waters, and atmosphere that supports life

5.2. Example -

5.2.1. Outer Layer of Earth's Crust

6. Habitat

6.1. Definition -

6.1.1. the natural environment of an organism; place that is natural for the life and growth of an organism

6.2. Example -

6.2.1. A Desert Habitat