HVAC, which stands for Heating, Ventilation and Air Conditioning, is very useful in countries with 4 seasons. During summer, they use air conditioning; during winter, they use heat pumps. The capacity of HVACs are usually expressed in tons. 1 ton is equal to 12,000 BTU/h. For residential heating systems, the capacity usually ranges from 1-5 tons.
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Answer:
Patriotism
Explanation:
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I’m not sure I understand this fully but hopefully this will help.
Let’s say the majority of the population smokes. This will not only hurt the smokers but the rest of the population as well do to second hand smoking. This then hurts the environment with butts of cigarettes being tossed everywhere, over production of tobacco and more money being spent on unhealthy habits.