Biosphere
Ecosystem
Community
Parts of the earth's air,water, and soil
where life is found
A community of different species
interacting with one another and with
their nonliving environment of matter
and energy
Populations of different species
living in a particular place and
Population
Organism
place, potentially interacting with each
other
A group of individuals of the same
species living in a particular place
An individual living being
The fundamental structural and
f i l i f lif
Smallest unit of a chemical element
that exhibits its chemical properties
Cell
Molecule
Atom
functional unit of life
Chemical combination of two or
more atoms of the same or different
elements