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.
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In comparison to the australopithecines, the early humans had smaller teeth, especially the molars and premolars. This suggests that they mostly ate softer foods. ... The modern human body size and limb proportions began to appear with the next species in our evolution--Homo erectus.
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Venus's mean radius is 6,051.8 km (3,760.4 miles), or about 95 percent of Earth's at the Equator, while its mass is 4.87 × 1024 kg, or 81.5 percent that of Earth.
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