Answer:
A:The United States must protect individual rights.
Explanation:
I took the test
Answer: Nitrogen oxides are present in combustion and industrial processes.
Explanation: We are talking about the combustion of coal, oil and gasoline by the emission of vehicles such as ships, airplanes trucks and automobiles, which is specially significant in big cities where there is more traffic . For the industry part there are the electric power plants and large industrial operation plants.
Answer:
Option C
Explanation:
The minimum angle of incidence inside a medium where lights are not longer refracted but totally reflected is referred to as critical angle
