The two correct answers for sustainable farming techniques are:
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Rotating crops each year - This helps to maintain soil health and reduces pest and disease buildup.
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Planting trees in between rows of crops - Known as agroforestry, this practice can enhance biodiversity, improve soil quality, and offer additional benefits such as shade and habitat for wildlife.
The other options, such as planting a single crop over a large area, tilling soil frequently, and limiting agriculture to rural areas, are not sustainable practices.