Compléter Carbon intro "game"Version en ligne Used to intro carbon cycle par Wally Mason 1 Natural Oxygen Carbon Dioxide Carbon Carbon Dioxide Coal Hydrogen Carbo Calcium Carbon Limestone Carbon Dioxide Carbon Dioxide Oxygen Carbon Petroleum Carbon gas Scavenger Hunt Use google to search for these answers . . . 1 . The top 2 most abundant elements in living things are . . . . , 2 . Which gas do animals breathe out during respiration ? - 3 . Which gas do plants take in during photosynthesis ? ( - ) 4 . Where do plants get their mass ? 5 . Which gas controls temperature on earth ? - 6 . What is the most abundant sedimentary rock on earth ? 7 . What elements are found in limestone ? , , 8 . What energy sources are currently used the most ? , - , 9 . What are the two main elements found in fossil fuels ? , 10 . What gas is released when fossil fuels are burned ? - 11 . Which element is present in questions 1 - 10 :
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