The study of biology is enormous in scope Organisms span size scales from submicroscopic molecules or viruses to the global distribution of biological communities. The study of life encompasses huge spans of time from contemporary organisms to ancestral life forms stretching back nearly four billion years. The science of biology is fascinating Information explosion during last century. Fascinating discoveries being made daily. Technological advances producing fascinating insights into life.
Life uses energy .
Life grows, develops, reproduces. Life has a genetic program. Living organisms respond to the environment. Life maintains themselves in fluctuating envirnoments - regulation, homeostasis . Life evolves .