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1. Give an example or illustration of each of the five evidences of molecular motion in liquids.

2. When is air saturated? What is the explanation?

3. Why does warming a liquid increase its rate of evaporation?

4. Air molecules are in rapid motion in all directions. Do they enter a liquid with a surface exposed to the air? Give reason.

5. What are some of the inconveniences of living in a saturated atmosphere?

6. Fish require oxygen. How is it obtained?