Biology is the science that studies life, and living things, and the evolution of life. Living things include animals, plants, fungi (such as mushrooms), and microorganisms such as bacteria and archaea.
People who study biology are called biologists. Biology looks at how animals and other living things (called organisms) behave and work, and what they are like. Biology also studies how organisms react with each other and the environment. It has existed as a science for about 200 years, and was preceded by natural history. Biology has many research fields and branches. Like all sciences, biology uses the scientific method. This means that biologists must be able to show evidence for their ideas and that other biologists must be able to test the ideas for themselves.
Biology attempts to answer questions such as:
- "What are the characteristics of this living thing?" (comparative anatomy)
- "How do the parts work?" (physiology)
- "How should we group living things?" (classification, taxonomy)
- "What does this living thing do?" (behavior, growth)
- "How does inheritance work?" (genetics)
- "What is the history of life?" (paleontology)
- "How do living things relate to their environment?" (ecology)
Modern biology is influenced by evolution, which answers the question: "How has the living world come to be as it is?"
- Cell biology
- Developmental biology
- Evolution / Evolutionary biology
- Genetics / Genomics
- Human biology / Anthropology / Primatology
- Marine biology
- Microbiology / Bacteriology
- Molecular biology
- Mycology / Lichenology
- "biology, n.". OED Online. 2019. Oxford University Press. http://www.oed.com.research.aadl.org/view/Entry/19228?redirectedFrom=biology (accessed March 23, 2019). Citation: Contrib. Physical & Med. Knowl. Introd. (1799) Chapter 4, "Physiology therefore—or more strictly biology—by which I mean the doctrine of the living system in all its states, appears to be the foundation of ethics and pneumatology."