Glacial retreat and sea-level rise show that our modern warming trend began before CO2 was added to the atmosphere in the mid-20th century.
Rising temperature is leading to increased length of growing seasons and more plantings. Increasing CO2 is fueling crop growth via increased CO2 fertilization.
The EPA and National Geographic report that the primary greenhouse warming gas is carbon dioxide. The inconvenient fact is that water vapor rules greenhouse warming.
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