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/ Eyewitness: Encyclopedia of Science / Mac_DorlingKindersley_EyewitnessEncyclopediaOfScience.iso / mac / LISC / CYCL / CYCL0N0M.WAV (.mp3)

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Waveform Audio File Format  |  1995-06-29  |  400.3 KB  |  1 channel  |  22,050 sample rate  |  36 seconds  |  [TEXT/LMAN]

Transcription: Life on Earth depends on a number of different cycles. The energy flow starts when light energy is trapped by green plants when they make their own food by photosynthesis. For this reason, they are called the world's producers. The energy in plants is passed on when they are eaten by herbivores, which are the primary, first level consumers. Carnivores, the secondary consumers, obtain their energy by eating herbivores. Every time energy is passed on, some is lost lost his heat and an undigested matter. Dead organisms provide energy for the decomposers, fungi, and bacteria.

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