Biogeochemical Cycles

Master carbon, nitrogen, & phosphorus cycles with our fill-in-the-blank worksheet!

The Carbon Cycle Fill in the blanks with the following terms by COPYING AND PASTING the terms into the text boxes. Use the following word bank:oil, natural gas, and coal burning of fossil fuels methane photosynthesissugar respiration ocean greenhousedecayed 6C02 + 6H2O ----> C6H12O6 + 6O2 photosynthesis sugar respiration ocean decayed oil, natural gas, and coal burning of fossil fuels methane greenhouse 6C02 + 6H2O ----> C6H12O6 + 6O2 The Nitrogen Cycle Fill in the blanks with the following terms by COPYING AND PASTING the terms into the text boxes. Use the following word bank:animals and plantsammonia and nitrateatmospheredenitrifyingnitrogen-fixingplantsproteinswaste78% animals and plants ammonia and nitrate atmosphere denitrifying nitrogen-fixing plants proteins waste 78% The Phosphorus Cycle Fill in the blanks with the following terms by COPYING AND PASTING the terms into the text boxes. Use the following word bank:DNAplantsbasins (ponds, lakes, streams, rivers, and ocean)overgrowthpollution (from fertilizer in runoff)rocks and waste DNA plants basins (ponds, lakes, streams, rivers, and ocean) overgrowth pollution (from fertilizer in runoff) rocks and waste