| Biofuels are fuels extracted from plants and crops and these have various advantages. These include |
| 1. Increasing agricultural diversity. |
| 2. Reduced use of fertilizers. |
| 3. Renewable source of energy. |
| Select the correct answer using the codes given below. |
A) 1 and 3 only
B) 3 only
C) 2 and 3 only
D) 1, 2 and 3
Correct Answer: B
Solution :
Biofuels may lead to monoculture where farmers will prefer cultivating such crops which can be used in making biofuels. Fertilizers used in such crops will only increase the fertilizer use. Biofuels are renewable source and this is their advantage compared to non-renewable fossil fuels. Use of Fertilizers: As biofuels are produced from crops and these crops need fertilizers to grow better. The downside of using fertilizers is that they can have harmful effects on surrounding environment and may cause water pollution. Fertilizers contain nitrogen and phosphorus. They can be washed away from soil to nearby lake, river or pond. Monoculture: Monoculture refers to practice of producing same crops year after year, rather than producing various crops through a farmer's fields over time. While, this might be economically attractive for farmers but growing same crop every year may deprive the soil of nutrients that are put back into the soil through crop rotation. Farmers may be tempted to produce crops which are goof for biofuels.
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