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Assessment
What is the main greenhouse gas produced by human activities?
Carbon Dioxide
Oxygen
Nitrogen
Methane
Which process is primarily responsible for the depletion of the ozone layer?
Photosynthesis
Ozone Depletion
Chlorofluorocarbon Emissions
Carbon Sequestration
What is biodiversity?
The variety of life in the world or a particular habitat
The process of recycling waste materials
The study of ancient climates
The measurement of air pollution levels
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