Unformatted text preview: Although both living and non-living things share the same fundamental properties of matter and energy (which we shall look at) living organisms and non-living materials differ in the degree to which energy is used and materials are organized. To help us determine how life and non-life can be distinguished we can study some of the following common "features" of living organisms: Biological Organization Molecule Organelle Cells Tissues Organ Organism Living organisms have an organized structure, with each level of biological structure building on the level below it. Atoms form molecules that are organized to form cell components, called organelles. Organisms may be unicellular or multicellular. Multicellular organisms have structural levels above the cell: tissues, organs and organ systems. Groups of organisms form populations and groups of different populations (or species) living in the same geographical area form communities and ecosystems. This is our life on earth....
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- Spring '10