Biology
science of life; examines how living things interact, how systems function, and how they function at a molecular level.
Organism
anything that has or once had all the characteristics of life
Organization
orderly structure shown by living things
Growth
process that results in mass being added to an organism; may include formation of new cells and new structures
development
changes an organism undergoes in its lifetime before reaching its adult form
Reproduction
the production of offspring
Species
group of organisms that can interbreed and produce fertile offspring
Stimulus
any change in an organism's internal or external environment that causes the organism to react
Response
organism's reaction to a stimulus
Homeostasis
regulation of an organism's internal environment to maintain conditions needed for life
Adaptation
inherited characteristics of a species that develops over time in response to an environmental factor, enabling the species to survive