1. Levels of Organization The Universe

2. Subatomic Particles Atoms
Protons, neutrons, and electrons
Atoms

3. Atoms
Building blocks of matter – listed on periodic of elements
Molecules

4. Molecules Cell organelles
More than one element/atom bonded together
Cell organelles

5. Cell organelles
Parts that make the cell like: nucleus, cell membrane, chloroplasts
Cells

6. cells
Building blocks of life – smallest living thing is made of one cell – humans are made of billions
tissues

7. tissues
A group of cells working together
organs

8. organs
A group of tissues working together
Organ systems

9. Organ systems Organisms / species
A group of organs working together
Organisms / species

10. Organisms/species populations
A unique living thing
populations

11. populations communities
More than one organism living together in one place
communities

12. communities ecosystems
Different populations living in one place together
ecosystems

13. ecosystems
A community of living things interacting with non-living things in one place
biosphere

14. biosphere
All the parts of the Earth that support life – atmosphere, hydrosphere, lithosphere, and living things
planets

15. planets
A celestial body large enough to have its own gravitational pull ( and that has been shaped into a sphere by that gravity)
Solar systems

16. Solar systems galaxies
A collection of planets orbiting the same star/sun
galaxies

17. galaxies The known universe
A collection of solar systems, stars, gas, and dust
The known universe

18. The known universe
Everything: all galaxies, space, matter and energy