Grade 7 Science: Levels of Biological Organization

Levels of Biological Organization

1. Individual: One of the species; e.g., one chipmunk, one human, one maple tree

2. Population: A group of individuals of the same species; e.g., a group of mallard ducks. Species refers to the most closely relating living things in an ecosystem - they can reproduce among each other.

3. Community: populations of different species that live and interact in a habitat

4. Ecosystem: The interactions of the populations with each other and the local abiotic elements makes up the ecosystem