Question

Government programs to reduce acid rain have resulted in cleaner emissions from u.s. industries in recent years. as a result, the sulfate concentration in rainwater has declined significantly. but the sulfate concentration in some lakes is showing little, if any, change. why might this be true?

Answer 1

This is still true because there are still manufacturing companies out there that are not really following protocols and procedures that are geared towards a green environment. The sulfate concentrations in lakes show little changes because contaminants are still present within the atmosphere, hydrosphere, and troposphere of the Earth. It would take a long time before such lakes will be rejuvenated into their original state.