How climate really changes Eric Jelinski Nuclear, chemical, mechanical engineer, project manager at nuclear power plant, university lecturer, farmer, inventor of farm equipment, observer of weather, climate, and agriculture Ontario, Canada October 23, 2021 The sun’s output can change at any time, and it has in the past, viz, North America covered by ice during that period known as the ice age. Later it warmed, it was warmer ~1000 years ago in Greenland and Labrador. Evidence of life by Viking explorer’s and settlers. Later again, it got cooler, they moved away, settlements became extinct, but the remains are now tourist attractions. Tourists marvel at the mud huts, but do not see the big picture. Tree stumps have been found in the arctic indicative of life. Trees, all vegetation and especially food crops for humans depend on photosynthesis that has a narrow temperature range between ~6 deg C and ~29 deg C, plus a commensurate soil temperature in the same range plus sufficient water, plus essential and sufficient nitrogen, phosphorous and potassium. Evidence of mankind is at least 20,000 years, but evidence of animal life may predate the Jurassic era. Their food source was back then the same as it is today driven by CO2 and photosynthesis out of the soil that is formed by decaying biota in the first place. The equation for growing food is:
1