Biology is the scientific study of life and living organisms. It is a branch of science that explores the structure, function, growth, origin, evolution, and distribution of living organisms, as well as their interactions with the environment. Biology encompasses a wide range of topics, from the molecular level (such as studying DNA and proteins) to the study of entire ecosystems and the complex interactions between organisms.
Biology seeks to understand the characteristics and processes that define living organisms, including their physical and chemical makeup, their organization and cellular structure, their reproduction and development, and their ability to respond and adapt to their environment. It also examines how organisms obtain and utilize energy, how they interact with each other and with their surroundings, and how they have evolved over time through the mechanisms of natural selection and genetic variation.
Subfields of biology include various disciplines such as molecular biology, genetics, cell biology, physiology, ecology, evolutionary biology, and many more. Researchers in biology use a range of techniques and tools, including experimentation, observation, data analysis, and advanced technologies like DNA sequencing and imaging techniques, to explore the complexities of life and advance our understanding of the natural world.