The correct answer is (D)Growing crops that produce only renewable resources
The by products of the crops such as corn stovers is used to produce energy without harming the soil quality or increasing the rate of soil erosion. The crops like sunflower, canola can produce bio-oil and bio-fuel which is a renewable fuel. This type of plants should be grown so that renewable resources can be produced. This means that this practice is sustainable as it is protecting the environment and also providing resources for human needs.
D. Nephron
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