If proper hand washing can help people from getting ill, then what is one way to help prevent illness? Answer choices: - shower less often - many antibiotics - antibiotics - breathe less - properly wash hands - Exfoliation - avoid water on hands - Thyroid-stimulating hormone
properly wash hands

If ice wedging is when freezing water expands and breaks rocks, then ice wedging is when freezing water expands and what? Answer choices: - a delta - breaks rocks - closes schools - freezes gas - destroys toys - erosion - solid, liquid, gas - near the shoreline
breaks rocks

If an animal requires oxygen and nitrogen for survival, then which of the following gases does an animal need to survive? Answer choices: - oxygen - blood - carbon monoxide - food - glycogen - helium - H20 - warm
oxygen