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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The purity of ecstasy is always in question, why? (short answer)

The consists of a mixture of gases and particles, including oxygen, nitrogen, hydrogen, carbon dioxide, water vapor, and dust.

Sadie and her mom were at a hardware store to purchase smoke detectors for their new home. sadie's mom was unsure how many units she should purchase. what is the general recommendation? a. one large one for the middle of the house b. every room in the house should have one c. kitchen, garage and laundry room- since those are where most fires happen d. every living area including the hallway by the bedrooms should have a smoke detector.