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Life Characteristics
The characteristics of living things
| Term | Definition |
|---|---|
| atom/molecule | smallest part of an element or compound |
| organ | a group of similar tissues working together like the heart or lungs |
| population | a group of one kind of organism living in an area |
| biome | all the living and nonliving things living in a similar environment such as a desert |
| cell | smallest level at which life exists |
| organelle | parts of a cell such as the nucleus |
| community | several populations of organisms living together |
| ecosystem | all living and nonliving things on Earth |
| tissue | group of similar cells working together |
| organism | a living thing that may be unicellular or multicellular |