Answers 25-26 Dally -- Earth and Space Science 4th 9 Weeks BLDG Unit Test — Unit testQuestion 9

9

QuizMultiple Choice

Unit Test — Unit test

Question 9 • (25-26) Dally -- Earth and Space Science 4th 9 Weeks BLDG

Which statement describes clean air as a natural resource?

Answer

A

Clean air can always be found indoors.

B

Clean air provides nitrogen gas for plant respiration.

C

Clean air is produced when high levels of ultrafine particles circulate.

D

Clean air reduces the risk of illnesses and other health problems.

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