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1. Humans have the most urgent need for a continuous supply of ________.
 
 
 
 

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2. Which of the following statements about nutrients is true?
 
 
 
 

Question 2 of 5

3. C.J. is stuck in her car during a bitterly cold blizzard. Her body responds to the cold by ________.
 
 
 
 

Question 3 of 5

4. Critical Thinking: When you open a bottle of sparkling water, the carbon dioxide gas in the bottle form bubbles. If the bottle is left open, the water will eventually “go flat.” Explain these phenomena in terms of atmospheric pressure.

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5. Critical Thinking: On his midsummer trek through the desert, Josh ran out of water. Why is this particularly dangerous?

Question 5 of 5