Salt makes the freezing point of water decrease, so it would freeze at a warmer temperature than regular water
Oxygen is balanced incorrectly.
The correct balanced equation: 2C6H6+15O2=12CO2+6H2O
The oxidation numbers for Nitrogen are respectively -3, +5, +4
A chemical reaction is going to be your answer
During summer, the Earth's orbit brings Australia closer to the sun (as compared to Europe during its summer), resulting in an additional 7% solar UV intensity. Coupled with our clearer atmospheric conditions, this means that Australians are exposed to up to 15% more UV than Europeans.
