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    The last burst carried the mail to the summit of the hill.
    9:53

    The last burst carried the mail to the summit of the hill.

    The last burst carried the mail to the summit of the hill. The
    10:00

    The last burst carried the mail to the summit of the hill. The

    mainly in their varying
    0:08

    mainly in their varying

     1  view
    kilojoules per gram
    0:40

    kilojoules per gram

     1  view
    greatest amount of food energy
    1:37

    greatest amount of food energy

     1  view
    in the traditional unit of heat
    1:18

    in the traditional unit of heat

     1  view
    The energy contents of a given
    0:38

    The energy contents of a given

     1  view
    necessary to health and
    1:23

    necessary to health and

     1  view
    reactions that do not require oxygen
    0:24

    reactions that do not require oxygen

     1  view
    energy input. Some
    1:14

    energy input. Some

     1  view
    Most animals derive
    0:36

    Most animals derive

     1  view
    Food energy
    0:14

    Food energy

     1  view