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Page 205: Review
Other examples of the changes that are caused by human activities include the increased greenhouse gases, ozone layer depletion, and smog.
a. Due to the burning of fossil fuels, more greenhouse gases are trapping the heat inside the Earth. As a result, the global temperature has increased over the years.
b. Ozone depletion is caused by gases found in aerosol sprays and refrigerants. These things contain chlorofluorocarbons (CFCs) that are released into the Earth’s atmosphere and destroy the ozone molecules; hence, we are more exposed to UV rays.
c. A smog is caused by air pollution. It appears like a grayish brown haze in the air which is harmful when inhaled. It may cause difficulty in breathing because of its toxicity which is from the chemical reaction between air pollutants.
Buckminster Fuller wants people to know that in order to ensure the long-term success of our planet and humanity, mankind must learn how to navigate the “spaceship,” which symbolizes our planet Earth. As humans, we have the control to prevent global catastrophes from happening.