Some methods to prevent soil erosion are ploughing parallel with the slopes of hills, to plant trees on unproductive land, and rotating crops.
Câu hỏi
Nhận biếtSome methods to prevent soil erosion are ploughing parallel with the slopes of hills, to plant trees on unproductive land, and rotating crops.
Đáp án đúng: D
Lời giải của Luyện Tập 365
=> planting
=> planting
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