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The top documents tagged [global warming photosynthesis]
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Using Biofuel woodgas pickup truck woodgas tractor Mother Earth News 1 ton of biomass contains the equivalent energy of 5.5 barrels of oil click to continue
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+ YEAR 10 EARTH AND SPACE SCIENCE (ESS). + EARTH & SPACE SCIENCE 2 parts to the unit: EARTH – Global systems & SPACE – Origins of the universe We’re going
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