Does burning fossil fuels increase the amount of carbon in the atmosphere?
Plants remove Carbon Dioxide in the process of photosynthesis. The Carbon Dioxide removed from the atmosphere is stored in glucose and other hydrocarbon molecules like cellulose.
Fossil fuels are the fossilized remains of plants and animals that stored the carbon molecules from photosynthesis. During the Mezazoic Era the levels of Carbon Dioxide were much higher than present levels. This caused the production of large amount plants remains seen in coal beds.
When the fossil fuels are burned the carbon dioxide stored in the fossil fuels is re released into the atmosphere.