Biosphere= all ecosystems
Ecosystem= consists of all organisms living in a particular area, as well as the nonliving, physical components of the environment
Community= consists of various populations of organisms living together in a given area
Population= a group of organisms of the same species in any given area.
Organism= within a population there are organisms, just one of those organisms is called an organism. For example, within a population lions, there is a lion.
Organ system= consists of different organs that work together for a specific function.
Organ= consists of different tissues that function together to do a certain job
Tissue= consists of similar cells that work together
Cell= the smallest unit of life that is able to carry out all the functions of living things
Molecule= consists of different atoms. For example, DNA, within DNA there are oxygen atoms and different proteins.
Atom= the smallest unit of matter that has the chemical properties of a particular element.