What is any material, such as straw, sawdust, leaves, plastic film or loose soil, spread on the soil surface to protect soil and roots from raindrop impact, crusting, freezing or evaporation called?
Correct answer B. Mulch
Explanation
A mulch is a protective surface layer that conserves moisture, moderates soil temperature, suppresses weeds and shields the soil from erosion. Mull and muck are types of humus and organic soil.
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