Biology: The Study of LIfe

evolution of a structure, behavior, or internal process that enables an organism to respond to environmental factors and live to produce offspring.

the study of life that seeks to provide an understanding of the natural world.

all of the changes that take place during the life of an organism; a characteristic of living things.

the ability to cause change; organisms use energy to perform biological functions.

biotic and abiotic surroundings to which an organism must constantly adjust; includes air, water, weather, temperature, other organisms, and many other factors.

gradual change in a species through adaptations over time.

increase in the amount of living material and formation of new structures in an organism; a characteristic of living things.

organism's regulation of its internal environment to maintain conditions suitable for survival; a characteristic of all living things.

anything that possesses all of the characteristics of life; all organisms have an orderly structure, produce offspring, grow, develop, and adjust to changes in the environment.

orderly structure of cells in an organism; a characteristic of all living things.

production of offspring by an organism; a characteristic of all living things.

group of organisms that can interbreed and produce fertile offspring in nature.

anything in an organism's internal or external environment that causes the organism to react.

in an experiment, the standard against which results are compared.

information obtained from experiments, sometimes called experimental results.