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because the products of the process, such as ethanol, contain more energy than does carbon dioxide, the product of aerobic respiration.
Answer:
The answer is mitochondria.
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The content of vaccine varies from vaccine to vaccine but it has some live form of the disease in the vaccine
Vaccine work by injecting a small amount of virus in the blood stream along some other agent which causes the body to produce antibodies which fight the infection
The school going kids receive vaccine because their body is no immunity and likely to be a carrier of diseases and spread them.