(Note: In the passage below, there are words or phrases that are missing and hav
ID: 291218 • Letter: #
Question
(Note: In the passage below, there are words or phrases that are missing and have been replaced with letters. Match the letter to the correct missing words and phrases from the word bank provided below.)
SPM or suspended particulate matter is a serious health threat. This particulate matter, also called particulates, particles, or [B] ________, enter human lungs and cause serious respiratory problems.
We previously looked at how coal burning power plants cause acid rain because the smokestacks of these plants emit sulfur gases that form acid in the atmosphere. This acid rains down on vegetation and into lakes and streams. Automobiles also contribute to this problem, because they emit a pollutant that is different than the sulfur from power plants. That pollutant, [C] _______ combines with oxygen and hydrogen in the atmosphere to form sulfuric acid, which also contributes to the acid rain problem.
Word Bank:
DEEP
NAAQS
nitric acid
nitrogen oxide and nitrogen dioxide
carbon dioxide
aerosols
nitrogen
1.DEEP
2.NAAQS
3.nitric acid
4.nitrogen oxide and nitrogen dioxide
5.carbon dioxide
6.aerosols
7.nitrogen
Explanation / Answer
B - 6. Aerosols
C - 4. Nitrogen oxide and nitrogen dioxide.
SPM or suspended particulate matter is a serious health threat. This particulate matter, also called particulates, particles or aerosols, enter human lungs and cause serious respiratory problems.
We previously looked at how coal burning power plants cause acid rain because the smokestacks of these plants emit sulfur gases that form acid in the atmosphere. This acid rains down on vegetation and into lakes and streams. Automobiles also contribute to this problem, because they emit a pollutant that is different than the sulfur from power plants. That pollutant, nitrogen oxide and nitrogen dioxide combines with oxygen and hydrogen in the atmosphere to form sulfuric acid, which also contributes to the acid rain problem.
Explanation: Aerosols are suspended particulate matter or particles in the atmosphere because like SPM, the aerosols are also microscopic liquid or solid particulates suspended in the air.
Nitrogen oxides are emitted by an automobile when nitrogen in the air reacts with oxygen at high pressure and temperature conditions inside the automobile's engine. These pollutants are the precursor to acid rain and smog. The nitrogen oxides emitted are a mixture of NO, N2O and NO2.
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