Biology is the natural science that studies
life and living organisms, including their physical structure,
chemical processes, molecular interactions, physiological
mechanisms, development and evolution.
There are generally considered to be at least nine "umbrella"
fields of biology, each of which consists of multiple
subfields.
- Biochemistry: the study of the material substances that make up
living things
- Botany: the study of plants, including agriculture
- Cellular biology: the study of the basic cellular units of
living things
- Ecology: the study of how organisms interact with their
environment
- Evolutionary biology: the study of the origins and changes in
the diversity of life over time
- Genetics: the study of heredity
- Molecular biology: the study of biological molecules
- Physiology: the study of the functions of organisms and their
parts
- Zoology: the study of animals, including animal behavior