The diagram below represents two flies. They look similar but they can not sexually reproduce with each other and produce offspring. This means that the two flies most likely belong to (1) the same kingdom and same species
(2) the same kingdom, but different species
3) different kingdoms, but same species
(4) different kingdoms and different species (I can't put the picture my bad)

(2) the same kingdom, but different species

Explanation:

I believe that they are from the same kingdom (Animalia) but are different species, which causes them to not be able to breed with one another.

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.