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71. The coal industry is important to every industrial nations because most other industries are directly or indirectly dependent on it.
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72. The brightly colored kingfisher that perches until it sights a fish, then dives into the water to catch its prey.
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73. Neptune circles the Sun once every 164.8 Earth years, and its day ¡ª¡ª one rotation its axis ¡ª¡ª is 15.8 hours.
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74. Observable comets are occasionally attracted toward the inner Solar System by the fields gravitational of nearby stars and giant molecular clouds.
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75. A single bacterium has the potential to produce 16 million copies of themselves in a day.
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76. Atoms are held together by the electrical forces of attraction between each negative electron and a positive protons within the nucleus.
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77. The original aim of encyclopedias was to provide a general educational.
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78. Icebergs are usually white, blue, or green, even although some are black due to rock material incorporated in them .
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79. Both adult ladybugs and their larvae are voracious eaters of aphids, scale insects, and another plant pests.
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80. Early English burlesque often ridiculed celebrated literary works and sentimentally drama.
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