Archerfish mouth is the secret of precision spit Shooting gobs of water at targets requires quick changes and fine control By Susan Milius ,
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, 16:48 PM September 4, 2014 View the video When archerfish hunt by precision spitting water into the air,
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, they do a lot more with their mouths than put their lips together and blow. If a Toxotes archerfish can’t jump high enough to snatch an insect off an overhanging leaf, the fish spits a water stream upward that knocks prey off its perch. In a quirk that puts extra punch into the water blast,
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, the fish fires the trailing end of a water stream faster than the water released at the beginning. Archerfish in the lab have reve... Source URL:

Look at any map of the Atlantic Ocean,
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, and you might feel the urge to slide South America and Africa together. The two continents just beg to nestle next to each other, with Brazil’s bulge locking into West Africa’s dimple. That visible clue,
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, prompted Alfred Wegener to propose over a century ago that the continents had once been joined in a single enormous landmass. He called it Pangaea, or “all lands.”
Today, geologists know that Pangaea was just the most recent in a series of mighty super-continents. Over hundreds of millions of years,
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, enormous plates of Earth’s crust have drifted together and then apart. Pangaea ruled from roughly 400 million to about 200 million years ago. But wind the clock further back,
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, and other supercontinents emerge. Between

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