Carbon dioxide occurs naturally in the atmosphere. It is an
essential ingredient in photosynthesis, the process by which plants make food
and energy. Levels of atmospheric carbon dioxide have increased since the
Industrial Revolution. The primary causes are deforestation and the burning of
fossil fuels such as coal. As carbon dioxide levels have risen, so have its
effects on air pollution. Carbon dioxide accounts for less than 1 percent of
the atmospheric gases. However, a delicate balance exists between carbon
dioxide and other gases. The concern over carbon dioxide is the significant
change over a relatively short period of time.
Carbon dioxide contributes to air pollution in its role in
the greenhouse effect. Carbon dioxide traps radiation at ground level, creating
ground-level ozone. This atmospheric layer prevents the earth from cooling at
night. One result is a warming of ocean waters. Oceans absorb carbon dioxide
from the atmosphere. However, higher water temperatures compromise the oceans'
ability to absorb carbon dioxide. Over time, the effects of carbon dioxide are
compounded.
Another environmental effect of carbon dioxide on air
pollution is climate change. The earth's surface temperature has risen over the
last 100 years, according to studies done by the National Oceanic and
Atmospheric Administration (NOAA). Scientists believe carbon dioxide pollution
is the primary culprit. The effects are highly complex. Evidence shows,
however, that ocean water levels have increased, resulting in a loss of
shoreline and coastal wetlands, Find out More about Carbon Credits.
Carbon dioxide is a contributor to the environmental effect
known as acid rain. Emissions released from fossil fuel-burning energy plants
combine with moisture in the air. The result is precipitation with a high acid
content. Documented evidence shows the physical damage to trees and other plant
life. Water and soil pollution occur from the acidic precipitation. A
complicating factor is the mobility of emissions. The effects of carbon dioxide
can be seen and felt far from their sources, making their impacts on air pollution
more serious.
Carbon dioxide emissions impact human health by displacing
oxygen in the atmosphere. Breathing becomes more difficult as carbon dioxide
levels rise. In closed areas, high levels of carbon dioxide can lead to health
complaints such as headaches. Carbon dioxide levels may indicate high levels of
other harmful air pollutants such as volatile organic compounds which
contribute to indoor air pollution.
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