The advantage of biomass energy / biofuel?

My book said that the advantage of biomass energy are
"reduce water pollution"
"organic matter can be recycled"

I dont understand these two statements. Anyone have some ideas what these two statements mean ?
But, why the water being less polluted ? for example, if we need to grow crop in order to provide energy, we still need water for them to grow….


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One Comment

  1. Kopi
    Posted August 28, 2010 at 3:25 pm | Permalink

    Reduce water pollution means that less water is getting contaminated and organic matter can be recycled means that we’re recycling our resources.

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