How do acids and bases affect the quality of freshwater sources? Acids and bases raise the pH of freshwater.
Acids and bases lower the pH of freshwater.
Acids lower the pH of freshwater and bases raise the pH of freshwater.
Acids raise the pH of freshwater and bases lower the pH of freshwater.

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Asoccer mom is driving her 75 year old grandmother and her 9 year old daughter home after the game. the grandmother and daughter were both in the back seat and both were wearing their seat belts. a car ran a red light in front of them, causing them to t-bone that car on the passenger side. fortunately there were no serious injuries, but the grandmother did sustain several rib fractures. the mother, daughter and driver of the at-fault car were shaken up but unhurt. what are some possible reasons that the grandmother sustained rib fractures while the other victims did not?