Are catgirls possible?

Proper catgirls (as a humanoid creature with a different anatomy) are not possible NOW. They may become possible in the future, when we get bioengineering. Basically primary ways would be : Splice humans to get catfolk.

a time line cause it goes from 685 to 978

sulfur dioxide

explanation: acid rain is caused by a chemical reaction that begins when compounds like sulfur dioxide and nitrogen oxides are released into the air. these substances can rise very high into the atmosphere, where they mix and react with water, oxygen, and other chemicals to form more acidic pollutants, known as acid rain.