Biology

 

Biology is the study of life from a scientific standpoint. It is a broad-ranging natural science with various unifying themes that unite it as a single, coherent topic. All living organisms, for example, are made up of cells that process hereditary information contained in DNA and passed down to future generations. Evolution, which explains the unity and diversity of life, is another fundamental concept. Finally, all living organisms require energy in order to move, grow, reproduce, and manage their own internal environment.

Biologists can investigate life at many different levels of organization. From a cell's molecular biology through the morphology and physiology of plants and animals, as well as population evolution. As a result, biology is divided into several subdisciplines, each of which is defined by the nature of its study objectives and the instruments it employs. Biologists, like other scientists, use the scientific method to learn about the world around them by making observations, posing questions, generating hypotheses, and conducting experiments.

The diversity of life on Earth, which began more than 3.7 billion years ago, is enormous. From prokaryotic species like archaea and bacteria through eukaryotic organisms like protists, fungi, plants, and animals, biologists have attempted to explore and classify the diverse forms of life. These numerous living species contribute to an ecosystem's biodiversity by playing specialized roles in nutrient and energy cycling.