Organismal biology is a branch of biology that focuses on the study of whole organisms
and their functions. It seeks to understand how individual organisms operate, survive
and interact with their environment. Organismal biologists study a diversity of life
forms, from microscopic bacteria to plants, insects, animals and humans. They investigate
how organisms obtain and use energy, grow and reproduce, respond to the environment
around them and interact with other species. By studying the characteristics and behaviors
of different organisms, organismal biologists seek to understand larger ecological
systems and apply their discoveries to other fields such as medicine, conservation
and agriculture.