4. Which of the following shows the components of a clean air
A. Nitrogen 78%, Oxygen 21%, other gasses .5%
B. Nitrogen 75%, Oxygen 24%, other gasses .5%
C. Nitrogen 78%, Oxygen 21%, Argon, CO2, and other gasses 1%
D. Nitrogen 75%, Oxygen 21%, Argon, CO2, and other gasses 1%
est to have a clean air and water?
er Act
A. Nitrogen 78%, Oxygen 21%, other gasses .5%
B. Nitrogen 75%, Oxygen 24%, other gasses .5%
C. Nitrogen 78%, Oxygen 21%, Argon, CO2, and other gasses 1%
D. Nitrogen 75%, Oxygen 21%, Argon, CO2, and other gasses 1%
est to have a clean air and water?
er Act
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Answer:
A.78% nitrogen and 21% oxygen other gasses 5%. This mixture of gases is commonly known as air.
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