the study of life
A living thing
Arranged in an orderly way
The addition of mass to an organism.
The process of natural change that takes place during the life of an organism.
The production of offspring.
A group of organisms that can breed with one another and produce fertile offspring.
Causes a reaction in an organism.
The reaction to a stimulus
Regulation of an organism's internal conditions to maintain life.
Any inherited characteristic that results from changes to a species over time.