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Q4: Roughly one half of the volume of
Q22: What role do plankton play in food
Q53: Why do tropical rainforests usually have poor
Q91: The Linnaean system of classification is _.<br>A)
Q103: Density _ depth in the Earth's crust.<br>A)
Q137: _ are floating plants or animals.<br>A) Benthos<br>B)
Q140: Animals escaping from captivity and reverting to
Q166: The hardwood broadleaf deciduous trees around the
Q173: The farthest north the vertical rays of
Q198: The International Date Line follows the Arctic