Question

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Answer 1

Answer:

1. This energy comes from the food we eat. Our bodies digest the food we eat by mixing it with fluids (acids and enzymes) in the stomach. When the stomach digests food, the carbohydrate (sugars and starches) in the food breaks down into another type of sugar, called glucose.
2. Quantities of energy given in one unit can always be converted to any other unit of energy. For example, 1 gram calorie is equivalent to 4.186 joules, which is used to measure heat energy. Many people are familiar with kilogram calories, which are often used tomeasure the energyavailable in food.
3. Getting there will remake the world's largest economic sector – energy– into one that is more sustainable, secure and affordable for everyone. Fossil fuels like coal, oil and natural gas supply 80 percent of the world'senergy to warm homes, charge devices and power transportation.

Answer 2

Answer:

Our energy supply comes mainly from fossil fule, with nucler and renewable rounding out the mix

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