This change is due to an increase in earths revolution rate.(:
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Answer: Small, stable population
Explanation: Superpowers tend to have a larger more bulky population compared to their counter-parts with a small more controllable population, (hence, stable.)
I think its B but possibly C
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)