Variation

Two nitrogen bases joined together in DNA. The bases always pair in a specific way:

• A pairs with T

• C pairs with G

These base pairs form the genetic code.

A fuel made from plant oils or animal fats that can be used as an alternative to diesel fuel.

The variety of different species of organisms on Earth.

A type of biofuel produced when yeast ferments sugars from crops such as corn or sugarcane, producing ethanol.

A type of fuel produced using biological materials such as plants or microorganisms.

A relationship between individuals based on shared inherited DNA.

Organic material from living or recently living organisms that can be used as a source of energy or food production.

The use of living organisms or biological systems to develop useful products or technologies.