Global Warming caused by man made carbon dioxide. Global warming is simply defined as an increasing temperature of the earth as a whole. Carbon dioxide is a colorless, odorless gas that is continually cycled through the Earth's water, air, animal and plant life. Humans exhale carbon dioxide as they breathe. Plants absorb it from the air during photosynthesis. Carbon dioxide traps infrared light from the sun and acts as a heating blanket around the earth. …showed first 75 words of 915 total…

…showed last 75 words of 915 total…of energy has increased more than 10 fold. Between 1870 and 1970, the burning of fossil fuels added 400 billion tons of carbon dioxide to the air. From 1970 to 1989, just 19 years, another 400 billion tons were added (Revkin 88). In closing, global warming is a reality, whether the cause is primarily related to man made carbon dioxide or merely a natural trend remains open to debate. Regardless of the reason, people should neither be fatalistic nor complacent about climate change risks.