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Summary Questions These requires critical thinking, not simply defining the words. Be sure to
use the vocabulary we've covered. 12. What are the important things that diffusion and osmosis
have in common? 13. What are the important differences between diffusion and osmosis? 14.
Food spoilage is usually caused by microorganisms (bacteria or fungi) growing on food. Food is
preserved by slowing the growth or killing the microorganism. One method of food preservation
(rarely used now) involves making the food very salty (usually with NaCI ). Why does making
food salty help preserve it? Be specific and use vocabulary that you've seen in lecture and lab.

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