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What is the most important effect of soil on natural vegetation?

Answer and explanation

Correct answer: It gives support and nutrients to plants

The direct answer is B: soil gives plants support and nutrients. Soil is the upper layer of land in which many plants grow. Roots spread through it, hold the plant firmly, and take water and mineral nutrients needed for growth. Therefore the reasoning is: roots enter soil; soil anchors roots; soil supplies water and minerals; the plant grows. Option A is wrong because wind direction is mainly related to pressure differences and air movement, not the chief work of soil. Option B is correct because support and nourishment are two basic effects of soil. Option C is wrong because soil does not stop sunlight; leaves receive sunlight above the ground. Option D is wrong because seasons are caused mainly by Earth’s tilted axis and revolution around the Sun. Remember: soil means support plus nutrients.

Related tags

SoilNutrientsPlant Growth

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