Answer:
Almost all national parks in the US they have environmental pollution problems that include unhealthy oxygen, cloudy skies, damage to nature and the effects of climate change (drought, snow cover reduction and an increase in forest fires).
Explanation:
California may have the most polluted national parks, but its leadership in environmental matters could become the best equipped state to deal with the problem, as it has supported strict air quality limits. The Regional Turbidity Rule of the Environmental Protection Agency requires states to improve visibility and environmental quality in parks by 2064. This improvement can be achieved by reducing emissions of harmful pollutants, a measure that the Earth continues to heat up.
However, smog includes ground-level ozone and particle pollution, it is still a nightmare. Ground-level ozone, a difference from that found naturally in the stratosphere, is an invisible secondary pollutant that results from reactions between chemicals emitted by vehicles and power plants, and they are present in paints and gasoline. These reactions are accelerated by heat. Forest fires also help increase smog. The health problems that cause this include cough, throat and chest irritation, and can aggravate specific respiratory conditions.
