BIOLOGY = EVOLUTION

The theory of evolution is a staggeringly beautiful and rather clever concept that aims to describe how animals, plants, bacteria and all other living things have adapted, and continue to adapt, to their surroundings. The theory allows mankind to perceive life's history down the eons and understand how and why all living things came to be.

Evolution is the grand unifying theory of biology. It is a solid core running through all modern research from molecular biology to genomics to ecology. Where once biology was a disjointed group of subjects whose main role seemed to be just to classify life into neat categories, it is now at the forefront of scientific research. Indeed, the study of heredity - genetics - is said to be leading mankind into a biotechnological golden age with ever-more potent pharmaceuticals, cleaner fuels and improved crops.
-- http://www.bbc.co.uk/dna/h2g2/pda/A673319

Nothing in Biology Makes Sense Except in the Light of Evolution.
-- Theodosius Dobzhansky

The contemporary theory of biological evolution is one of the most robust products of scientific inquiry. It is the foundation for research in many areas of biology as well as an essential element of science education.
-- American Association for the Advancement of Science

A central organizing concept in biology is that life changes and develops through evolution, and that all life-forms known have a common origin.
-- http://en.wikipedia.org/wiki/Biology

Teaching Biology Means Teaching Evolution
"Without evolution, biology would simply be little more than a kind of 'natural history stamp collecting' in which individual species are discarded, examined and identified as individual entities with no apparent link between them and anything else in the living world."

The evidence for the natural principle of change through time, he writes, "is awesome and no one who has studied even a fraction of the data can seriously doubt that evolution has occurred."
-- http://coehp.uark.edu/colleague/4748.php