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Although some sharks close their eyes just before they bite, their bites are on target. Researchers have noted that sharks often misdirect their bites at metal objects and that they can find batteries buried under sand. This evidence suggests that sharks keep track of their prey during the split second before they bite in the same way that
Q2: Relatively small geographic areas with high concentrations
Q3: After eating a brightly coloured frog for
Q28: You discover a rare new bird species,
Q32: Calcium ions initiate sliding of filaments in
Q42: For most terrestrial ecosystems, pyramids of numbers,
Q48: In ecosystems, why is the term cycling
Q66: Which of the following examples describes a
Q71: Botulinum toxin inhibits the presynaptic release of
Q80: Hans Spemann and colleagues developed the concept
Q89: Animal cells that are present only for