How global warming might affect food security

Between the year 1870 (the first industrial revolution) and today, the global temperature has risen by almost 2 degrees Celsius. This has come about due to more fossil burning (oil, natural gas, coal), which has also increased the carbon dioxide (abbreviated as CO2) levels from 280 ppm to 400 ppm. This heating has caused glaciers (and snow capping mountains) to melt and the sea level to rise.

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