A scientific theory must stand up to all scientific testing. Theories are broad explanations that are based on strong scientific support. That being said, it is necessary for a theory to go through testing to ensure the validity.
You and a group of friends are spending your vacation hiking through the mountains. it is cold in the mountains. you will be expending a lot of energy while hiking and you will need plenty of energy to keep you warm. you should pack foods high in to provide the most energy or kilocalories per gram of food. a) carbohydrates b) lipids (fats) c) proteins d) sugars
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