With respect to farming trends in the developing world, which of the following is true?
a. The inadequate drainage of water may lead to the loss of arable land.
b. Irrigations systems are leading to an increase of arable land.
c. Soil is becoming more toxic, harming farmland.
d. Crop rotation to replenish nutrients is becoming less necessary.
Answer: b. Irrigations systems are leading to an increase of arable land.
In developing nations the spread and development of irrigation systems has led to significant increase in Arable Land throughout the world. The other option such as soon nutrient's replenishment, and soil toxicity are the problems of intense agriculture in relatively advanced countries. The first option is also not correct because there is already a lot of land which is not Arable, but is being brought under cultivation through irrigation.
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