Why Is the Concentration of Carbon Dioxide in Earth's Atmosphere

question 52

Multiple Choice

Why is the concentration of carbon dioxide in Earth's atmosphere rapidly increasing?

• A) Earth is warming.
• B) The ozone layer has become much thinner.
• C) More photosynthesis is occurring.
• D) The oceans are cooling.
• E) Many human activities release carbon dioxide.

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Nonprofit's Opportunity

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