Levels of Organization The Universe

Subatomic Particles Atoms Protons, neutrons, and electrons Atoms

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

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

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

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

tissues A group of cells working together organs

organs A group of tissues working together Organ systems

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

Organisms/species populations A unique living thing populations

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

communities ecosystems Different populations living in one place together ecosystems

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

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

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

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

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

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