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Winter in the Northern Hemisphere begins December 21 or 22, when the North Pole is tilted a full 23.5° away from the sun. This day is known as the winter solstice. In June, in the northern hemisphere summer, the Sun's rays — and warmth — reach all the way to the north pole.
In June, in the northern hemisphere summer, the Sun's rays — and warmth — reach all the way to the north pole. In December, in the northern hemisphere winter, the north pole is tilted away from the incoming sunshine.
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Similarities in embryos are evidence of common ancestry. All vertebrate embryos, for example, have gill slits and tails. Most vertebrates, except for fish, lose their gill slits by adulthood.
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Answer – A questioned Sample
In forensic science, a sample that is obtained from the scene of a crime is called a questioned sample. During the investigation, questioned samples would be compared to a known sample to test for similarities which may serve as evidence.
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DNA replication is the process by which DNA makes a copy of itself during cell division. The first step in DNA replication is to 'unzip' the double helix structure of the DNA? molecule. ... The two separated strands will act as templates for making the new strands of DNA.