VICTOR DE SCHWANBERG / SCIENCE PHOTO LIBRARY VICTOR DE SCHWANBERG / SCIENCE PHOTO LIBRARY
Carbon credits. Artwork of an individual credit card with carbon trading symbols. This represents the environmental policy of carbon credits, which can be traded by individuals and industries to offset carbon emissions. Carbon trading is done in units of carbon dioxide. This is the main greenhouse gas that contributes to man-made global warming, also known as anthropogenic global warming (AGW). It is thought that the main increases in carbon dioxide are due to the burning of fossil fuels for energy.
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