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Humans and most other mammals have two sex chromosomes, the X and the Y. Females have two X chromosomes in their cells, while males have both X and a Y chromosomes in their cells. Egg cells all contain an X chromosome, while sperm cells contain an X or Y chromosome.
Explanation:
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In Chicago, this building was renamed to the "Willis Tower" They planned on reintroducing this building to the world.
Order these phases |, |||, and ||
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They are the most visible evidence of global warming today. In addition to raising sea water levels, widespread loss of glaciers will likely alter climate patterns in other, complex ways. For example, glaciers' white surfaces reflect the sun's rays, helping to keep our current climate mild.
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Answer:
europa y asia son fronteras de Africa, y Africa esta ubicada en el hemisterio Este
