<span>The year with out a summer happened during 1816 when weather in Europe and North America took a bizarre turn that resulted in widespread crop failures and even famine. Cold temperatures returned. The lack of sunlight became so severe that farmers lost their crops and food shortages were reported in Ireland, France, England, and the United States.
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Answer:
i belive its C.35000 BCE but im not so sure its been a long time
Explanation:
Differences in water density, resulting from the variability of water temperature (thermo) and salinity (haline), also cause ocean currents. This process is known as thermohaline circulation. In cold regions, such as the North Atlantic Ocean, ocean water loses heat to the atmosphere and becomes cold and dense.