The Tropopause Is the Boundary Between_____

question 40

Multiple Choice

The tropopause is the boundary between_____ .

• A) tropical and polar air masses
• B) the troposphere and mesosphere
• C) the troposphere and stratosphere
• D) two layers of high ozone concentration

---

Definitions:

Motorcycle Fatalities

Deaths resulting from accidents involving motorcycles.

Independent Variable

A factor manipulated by the experimenter to investigate its effects on the dependent variable in a study.

Factorial Design

A design in which all levels of each independent variable are combined with all levels of the other independent variables. A factorial design allows investigation of the separate main effects and interactions of two or more independent variables.

Main Effect

The direct effect of an independent variable on a dependent variable.