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The contours of the sea floor cannot be seen beneath the concealing waves but
the oceanic landscape is rich and varied, with higher mountains and deeper
trenches than elsewhere on the earth. The study of plate tectonics has shown that
Recent studies support the theory of sea-floor spreading, according to which
molten rock from the earth's core rises upward along the mid-ocean ridge
spreading toward the continents. Once thought to be as old as the earth itself, the
rock on ...
See sandpipers. sculpin, 65 seabirds, 20, 54-55, 107 sea cucumbers, 17, 64, 65
sea felt, 61 sea floor, 5—6 sea grass communities, 26 sea hares, 63 sea horses,
3 1 sea lettuce, 61 sea lions, 56-57, 78, 82, 103 California, 20 Galapagos, ...
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I purchased all three books in this set and taught a short course to a small group of high school kids. We had a great time with this course! We did 10 experiments and held very intense all-day ... Read full review