The document outlines the levels of biological organization from the largest to the smallest scale: the biosphere encompasses all life on Earth and abiotic features, ecosystems consist of biotic communities and their abiotic environment, communities comprise interacting populations, populations are groups of the same species, organisms are single living entities made up of organ systems working together, which are composed of tissues, made of cells working as a unit of structure and function, cells contain molecules such as DNA, and molecules are formed from bonded atoms, the basic units of matter.

1. Levels of Organization

2. Biosphere
• Whole living layer around the globe
• Includes abiotic features
http://people.hofstra.edu/geotrans/eng/ch8en/conc8en/envisys.html

3. Ecosystem
• A biotic (living) community plus the
abiotic (nonliving) features

4. Community
• Several populations living together
• Populations interacting with each
other

5. Population
• Same type of
organisms living
together

6. Organism
• Entire living things
(organisms)
• Usually made of
systems
• May be a single cell
• Living

7. Systems
• Organs that work together
• Living

8. Organs
• Tissues that work together
• Living

9. Tissue
• The same kind of cells working
together
• Living

10. Cell
• Made of organelles
• Basic unit of structure & function
• Living

11. Molecules
• 2 or more bonded atoms
• Form compounds
• Non-living

12. ATOMS
• Smallest part of matter
• Non-living