21 Global Warming global-warming-101 Fossil Fuels Burning Polar Ice Caps Melting Video
22 Global WarmingGlobal warming is the increase in the average temperature of Earth's near-surface air and oceans since the mid-20th century and its projected continuation.Can we bury our CO2 in the ocean?
43 Do “Traveling Nitrogen: Activity How did you (nitrogen) get into the soil?How did you move from one place to another?Did you ever get transformed back to N2?How do animals get the nitrogen that they can use?
44 Phosphorus Cycle Phosphorus does not enter the atmosphere in its cycle Inorganic phosphorus remains mostly in rocks and ocean sedimentsOrganic Phosphate is found in DNA and RNA (all living things)CHONP
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