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definitions

terms for organization of life

TermDefinition
atoms fundamental elements of matter
molecules atoms joined together
organelles molecules assembled into tiny compartments in cells, specialized compartment in a cell
cell smallest unit of life, basic organizational unit for living things
tissue group of similar cells act as a functional unit
organs complex body structure comprised of tissues grouped together in functional unit
organism individual living creature
population group of organisms of the same species living in the same place
species all populations of a particular kind of organism together, similar in appearance and able to breed
community all populations of different species living together in one place
ecosystem a biological community and the soil and water within
kingdoms highest taxonomic category includes: Archaea, Bacteria, Protista, Fungi, Plantae, Animalia
homeostasis maintain a relatively stable internal environment in an organism or steady-state equilibrium in a population
natural selection those organisms whose characteristics make them better able to survive the challenges of the environment
symbiosis organisms of two different species live in direct contact and benefit from one another
Created by: 3skipa
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