Which of the following best represents a balanced equation for the reaction of
nitrogen gas and oxygen gas to form nitrogen monoxide?

The answer to your question is: letter a

Explanation:

a) This answer is correct because nitrogen and oxygen are diatomic.

b) This answer is incorrect because nitrogen and oxygen are monoatomic and the reactants in this reaction are not monoatomic.

c) This answer is incorrect because oxygen is diatomic and in this reaction is not.

d) This option is incorrect because nitrogen is diatomic and in this reaction is not.

away from the curb

explanation:

the wheels would then hit the curb if it started to rolling, decreasing the chance of an accident.

geosphere and hydrosphere.

this is because the geosphere has to do with geological events, while the hydrosphere controls all water on earth.