Prof.K.B.R. WATER
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How important is soil? What is soil? Soil is a mixture of minerals, weathered rock, and humus. Humus is bits of decayed plant and animal material that.
Plant Nutrition All plants are autotrophs make their own carbohydrates but still require other nutrients.
Land Degradation Due to Agriculture Part 2:Soil Erosion Fall 2012, Lecture 6.
CRCT Question
