Biology — The Science of Life

Biology studies living organisms — their structure, function, origin, evolution and interactions with each other and their environment.

Unifying Themes

• Cell theory — all life is made of cells.
• Genetic inheritance — DNA carries heritable information.
• Evolution by natural selection — explains the diversity of life.
• Energy flow — photosynthesis, respiration and ecosystems.
• Homeostasis — living systems regulate their internal state.

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Go deeper with Genetics, Molecular Biology, Microbiology and Ecology.