Aboy with an extra x chromosome probably has which of the following syndromes? a. down syndrome. b. klinefelter syndrome. c. xxx syndrom

A boy with an extra X chromosomes probably has Klinefelter syndrome.

Klinefetler syndrome often results in loss of male secondary sex characteristics or it may results in development of female sex characteristics .

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.