Hierarchy for life on Earch
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Atom
Smallest particle of an element
organ system
group of organs that work together to perform a specific function
organ
A collection of tissues that carry out a specialized function of the body
molecule
A group of atoms bonded together. It is the smallest part of a chemical compound.
biome
A group of ecosystems with similar climates and organisms
population
A group of individuals that belong to the same species and live in the same area
tissue
A group of similar cells that perform the same function.
Organism
A living thing
Community
All the different populations that live together in an area
cell
Basic unit of life
Ecosystem
an area where plants, animals, and other organisms work together.
Biosphere
the part of Earth where life exists
