A scientist observes fossil evidence that leads her to believe that certain organisms have a common ancestor. Which observation most likely led to this conclusion?

She observed older fossils that contained many of the same minerals as the newer ones.

She found skeletons of modern organisms in the same area as fossilized organisms.

She observed a fossil with skeletal structures similar to certain modern organisms.

She found several fossils in rock layers directly below other fossils of similar size.

ANSWER

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.

supercell thunderstorms are perhaps the most violent of all thunderstorm types, and are capable of producing damaging winds, large hail, and weak-to-violent tornadoes

on the planet jupiter, the acceleration due to gravity is approximately 26 m s2 , roughly 2.7 times the acceleration due