Which sentence correctly compares the acidity of acid rain to the acidity of natural rainwater? A. The acidity of acid rain is more basic than the acidity of natural rainwater. B. The acidity of acid rain is less than the acidity of natural rainwater. C. The acidity of acid rain is greater than the acidity of natural rainwater. D. The acidity of acid rain is the same as the acidity of natural rainwater.
