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What is a calorie?<br />
1 cal= amount of energy required to raise the<br />
temperature of 1 gram of water by one degree<br />
Celsius.<br />
<strong>Energy</strong> in food: Calories<br />
1 Calorie=1000 calories<br />
<strong>Energy</strong> units<br />
1Btu = amount of heat energy required to<br />
raise temperature of one pound of water by<br />
one degree Fahrenheit.
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