In an experiment, scientists control the

variables
controls
biologicals
hypotheses

The impact of science and technology on international relations

List three reasons why people might be fascinated by something as dangerous as a nuclear weapon.

What does it mean to say that "service sector" jobs are predominant in europe's mixed economies today? a. that jobs where people work in factories predominate b. that jobs where people do something for others predominate c. that jobs where people work the land predominate d. that jobs in government predominate