General Science for Class 7

    Feeding Relationships and Environment
    Leaves of cactus are like small spines to
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    Investigating Space
    The surface of red supergiant shines
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    Investigating Space
    The brightest star that can be seen from earth is
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    Physical and Chemical Changes
    The plastic industry began in
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    Sound Waves
    Sound travels more fast in
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    Sound Waves
    The organs of a human that detect sounds are
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    Heat Transfer
    The color and texture of a poor reflector of radiant heat is
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    Sound Waves
    Two similar string instruments are
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    Sound Waves
    Sound is made louder by increasing
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    Investigating Space
    In the sun, a process that produces huge amount of energy takes place. It is called
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