Density
The amount of mass per unit volume
Dissolve
To make a solution of by mixing with a liquid
Diversity of species
Measure within an ecological community that incorporates both the number of species in a community and the evenness of abundance of species.
DNA
The large molecules inside the nucleus of living cells that carry genetic information.
Electron
A particle of an atom that carries a negative charge.
Electromagnetic spectrum
The entire range of wavelengths or frequencies extending from gamma rays to the longest radio waves
Element
A pure chemical substance composed of the same atom
Energy transfer
The movement of energy from one location to another
energy transformation
The change of energy from one location to another
Evolution
The change in the gene pool through a series of gradual or rapid changes of a population from generation to generation by such processes as mutation, natural selection and genetic drift accounting for the current diversity of species.
Extinction
The death of all members of a species of plant or animals.
Frequency
The number of occurrences within a given period of time
Gas
a fluid that has neither independent shape nor volume but tends to expand indefinitely
Genetic
A trait that is inherited
Gene
A segment of inheritance information that specifies a trait
Genetic mutation
Occurs when a DNA gene is damaged or changed in such a way that alters the genetic message being carried by that gene.
Gravitational potential
The amount of work which must be done against gravitational forces to move an object to a specified position from a reference position
Heat
A form of kinetic energy produced by the motion of atoms and molecules and may be transferred from one body or system to another due to a difference in temperature.
Indicator
A substance that specifies the degree of acidity or basicity of a solution.
Input
The addition of matter, energy, or information to a system.