According to the National Park Service, Air Pollution Is Responsible

question 70

Multiple Choice

According to the National Park Service, air pollution is responsible for ____.

• A) increasing rates of soil erosion at U.S. national parks
• B) reducing tourism throughout the year at U.S. national parks, even when the air quality is good
• C) causing frequent forest fires in U.S. national parks
• D) degrading scenic views in many U.S. national parks over 90% of the time
• E) causing acid rain in almost all U.S. national parks throughout the year

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Definitions:

Sound Properties

Characteristics of sound waves, including amplitude, frequency, and timbre, that determine the perception of sound.

Medium

A channel or means for the transmission of information or data, or a substance in which something else is conveyed or occurs.

Vibration

An oscillation or rapid motion back and forth or up and down of particles in a medium or an object.

Molecules

The smallest unit of a chemical substance that can exist independently while retaining the composition and chemical properties of the substance.