Occurence of an accidental or unexpected but fortunate results. 

Combining what you have learned and forming a logical conclusion.

Explains a phenomena, supported by many observations and experimients

a testable explanation

The group in an experiment that does not get any treatment

The group in an experiment that receives the variable being tested

Anything that is part of the environment and causes a reaction

regulation of an organisms internal conditions to maintain life

any inherited characteristics that results from changes over time

produces clones and does not require gametes.