An independent variable is the one that you change and the dependent variable that changes when he independent variable changes.
microevolution can lead to macroevolution
Hunt, barnett, and branch (1971) showed that between 60 and 70% of the individuals treated for alcohol, tobacco, or heroin abuse in abstinence-oriented programs had returned to their primary substance use three months after treatment. This study suggests that the relapse dynamic cuts across different substances of abuse and may be a fundamental aspect of all addictive behaviors, at present, abstinence is not a reliable or viable method for the treatment of addictions.
A stimulus is a change in an organism's surrounding that causes it to react.
