| the chemical reaction that breaks down nutrient molecules in living cells to release energy. Food oxygen - energy water carbon dioxide |
| angry and annoyed; ill-humored |
biology bi·ol·o·gy (bī-ŏl'ə-jē)
n.
The science of life and of living organisms, including their structure, function, growth, origin, evolution, and distribution. It includes botany and zoology.
The life processes or characteristic phenomena of a group or category of living organisms.
| biology (bī-ŏl'ə-jē) Pronunciation Key
The scientific study of life and of living organisms. Botany, zoology, and ecology are all branches of biology. |
The study of life and living systems.