Solved

Oxygen Accounts for About ____ of the Air in the Atmosphere

Question 14

Multiple Choice

Oxygen accounts for about ____ of the air in the atmosphere.

A) 5%
B) 21%
C) 53%
D) 66%
E) 82%

Related Questions

Q9: The _ includes all of the water

Q10: Water contracts when it freezes, making ice

Q11: Photosynthesis is performed by _.<br>A) heterotrophs<br>B) autotrophs<br>C)

Q12: Which of the following best represents the

Q13: A(n) _ consists of populations of different

Q15: Lightning is one of the natural mechanisms

Q16: The amount of carbon dioxide in the

Q17: Clearly explain the distinction between Gross Primary

Q18: Organisms that cannot produce their own food

Q19: Life on earth depends on the _