EVOLUTION
THE ORIGIN OF LIFE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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volcanoes
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earthquakes
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neither a nor b
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Detailed explanation-1: -These soils are called Andisols, and they are often very young, and acidic depending on which type of volcano they come from.
Detailed explanation-2: -Volcanic deposits are enriched in elements such as magnesium and potassium. When volcanic rock and ash weathers, these elements are released, producing extremely fertile soils.
Detailed explanation-3: -Major areas of volcanic soils occur in Chile, Peru, Ecuador, Colombia, Central America, the United States, Kamchatka, Japan, the Philippines, Indonesia, New Zealand, and the independent island states of the south-west Pacific.
Detailed explanation-4: -Ashfalls can lead to elevated soil sulphur levels and lowered soil pH. These changes in soil composition can reduce the availability of phosphate and other essential minerals and alter the soil’s characteristics to such an extent that arable crops and pasture plants will not survive.