Answer:
As you maintain height, the amount of air above you reduces, lowering the pressure. When the pressure drops, the air molecules spread out more (air expands) and the temperature decreases
Explanation:
Not sure if its long enough.
<span>the answer is physical boundary</span>
Many factors have contributed to increase in life expectancy. Examples such as medical advancements in modern medicine, less wars being fought, improvement in sanitation, eating a healthy diet, a overall healthier lifestyle (for example, people don’t smoke cigarettes as much as the olden days) and easier access to education.
Long-term health effects from air pollution include heart disease, lung cancer, and respiratory diseases
Short-term air pollution can aggravate the medical conditions of individuals with asthma and emphysema.
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(jacemorris04)
