Chemistry
What are the components responsible for acid rain?

Nitrogen monoxide (NO) and Carbon monoxide (CO)
Oxides of carbon (COx) and Oxides of nitrogen (NOx)
Carbon dioxide (CO2) and Carbon monoxide (CO)
Sulphur dioxide (SO2) and Nitrogen oxides (NOx)

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Chemistry
A solution is

A homogeneous mixture of two or more substances
A solid dissolved i water
A mixture of two liquids
A solid dissolved in a liquid

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