Levels of OrganizationLevels of Organization

(from smallest to largest)(from smallest to largest)

AtomAtom

Biological MoleculeBiological Molecule

OrganelleOrganelle

CellCell

TissueTissue

OrganOrgan

Organ SystemOrgan System

ORGANISMORGANISM

PopulationPopulation

Group of organisms of one type that live in the same area

CommunityCommunity

Populations that live together in a defined Populations that live together in a defined areaarea

EcosystemEcosystemCommunity and its nonliving surroundings (large as a desert, or as small as a puddle)

BiomeBiome Group of ecosystems that Group of ecosystems that

has the same climate and has the same climate and communitiescommunities

Our BiomeOur Biome

Temperate Forest Temperate Forest

BiosphereBiosphereThe part of the Earth that contains all ecosystems