A. Soil erosion
B. Tectonic plate movements
C. Carbon footprint
D. Leaching of nutrients
参考答案:
B
本题详细解析:
Tectonic plate movements occur over millions of years and, therefore, do not have much impact on sustainability of agriculture or soil sustainability in a short period of time.
Soil erosion is the removal of soil due to the forces of wind or water, and it can affect the sustainability of agriculture. Soil fertility can take a long time to be restored once the top soil layers are removed (Choice A).
Transportation of crops to faraway places requires the use of fossil fuels, which can release carbon dioxide, exacerbating the problem of global warming. It is, therefore, more efficient to use seasonal and local crops to reduce their impact on the environment and make agriculture more sustainable (Choice C).
Due to heavy rainfall, minerals like nitrates or phosphates are sometimes washed away or leached from the soil, making it less fertile and affecting the sustainability of agricultural crops (Choice D).
