Its B. <span>Australopithecus africanus, Homo erectus, Homo neanderthalensis</span>
The brain and the skull the skull protects the brain
Answer: Arctic Sea ice extent is virtually impossible to accurately measure from the Earth's surface. Scientists use radiometry data and visible imagery collected from the satellites to determine the sea ice extent.
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The most famous definition of a species comes from the 20th century German-born biologist Ernst Mayr, who emphasised the importance of interbreeding.