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Levels
Levels of organization
| Term | Definition |
|---|---|
| Atoms | The smallest part of a cell. |
| Molecules | Made of one or more atoms bonded (stuck) together. |
| Organelles | Composed of molecules, and carry out specific functions for each cell. |
| Cells | Smallest functional unit of life. All living organisms are composed of one or more cells. |
| Tissues | Make up the second level of organization. They are formed by joining of the cells that have similar function of structure. |
| Organs | A group of tissues that perform a specific function or group of functions. (Example = The heart) |
| Organ Systems | A collection of organs that work together to perform a specific function. (Example = The digestive system) |
| Organism | A living thing that's able to perform simple acts of survival. (Example = Humans, plants, bacteria) |
| Population | A group of organisms of the same species. (Example = Wolves) |
| Community | A group of interacting species sharing populated environment. (Example = Wolves, rabbits, and grass living in the same area) |
| Ecosystem | Has organisms but also includes the land, water, air, rocks, and other non-living things in the area. |
| Biome | A major regional or global community that is made of similar ecosystems (Example = Rainforest, tundra, desert) |
Created by:
Olivia2013
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