Conflicts of use: The 1st generation biofuels cannot be produced wider without threatening of food supplies and biodiversity. Land availability, and possible conflicts of use (food). Water availability, and possible conflicts of use. Due to difficult economics, public support is required in most of the cases: Lower environmental benefits; Some of the 1st generation produce only limited Greenhouse gas emissions saving, some of them are below EC threshold; Some crops require more fertilizers, pesticides; Deforestation and biodiversity impacts, soil erosion could sometimes damage the balance.
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