The Goal of the Pre-Post Design Is to Examine the Effects

question 5

Multiple Choice

The goal of the Pre-post design is to examine the effects of treatment by measuring ____.

• A) two groups before and after a treatment
• B) two groups after a treatment
• C) one group after a treatment
• D) one group before and after a treatment

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Definitions:

Hydrochlorofluorocarbons

Compounds used as refrigerants, solvents, and blowing agents, less damaging to the ozone layer than CFCs but still concerning for global warming.

Nitrous Oxide

A colorless gas with a slightly sweet odor, used as a sedative and analgesic in dentistry and surgery, and also known for its contribution to greenhouse gas emissions.

Surface Ozone

A layer of ozone in the lower atmosphere acting as a pollutant harmful to humans and vegetation.

Species Richness

A measure of the number of different species present in an ecosystem, providing an indication of biodiversity.