It's called muscle spasticity. Or in common terms, muscle cramp.
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Answer:
Which statement best explains why cells were observed in more detail using a compound microscope than a simple microscope?
A compound microscope has greater magnification ability than a simple microscope.
Explanation:
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Explanation:
To swim, they move their tails up and down, rather than back and forth as fishes do. This is because whales evolved from walking land mammals whose backbones did not naturally bend side to side, but up and down. ... Whales do the same thing as they swim, showing their ancient terrestrial heritage.
Cetaceans are fully aquatic marine mammals belonging to the order Artiodactyla, and branched off from other artiodactyls around 50 mya (million years ago). Cetaceans are thought to have evolved during the Eocene or earlier, sharing a closest common ancestor with hippopotamuses.
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