Biology is the scientific study of life and living organisms, encompassing various fields that explore the structure, function, growth, and evolution of life forms. It examines everything from microscopic cells to complex ecosystems, providing insights into how organisms interact with each other and their environments. Charles Darwin and his theory of evolution are pivotal in understanding the diversity of life on Earth. In addition to studying individual organisms, biology also investigates the biochemical processes that sustain life. This includes understanding how DNA carries genetic information and how it influences traits in living beings. The field of biology is essential for advancements in medicine, environmental conservation, and biotechnology.