Levels of Ecological Organization

1. Organism

1.1. one living thing

2. Ecosystem

2.1. A large naturally occurring community of biotic and abiotic factors (living and nonliving) occupying a major habitat

3. Biosphere

3.1. the place where all organisms exist and live

4. Population

4.1. a large group of an organism

5. Community

5.1. All the organisms living in a particular area or place