Which is a correct relationship between soil particles and soil characteristics?
A) Clay particles hold tight to NO3- and the nitrogen content of clay soils is therefore high.
B) Clay is unable to retain Ca2+ and K+ which are easily leached away.
C) Clay holds water and clumps.
D) Sand prevents water erosion and leaching.
Correct Answer:
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Q3: List the steps associated with the pressure-flow
Q4: Which statement is NOT true about the
Q5: The main components of soil are
A)a mixture
Q6: The early experiment by Van Helmont (1600s)describes
Q7: Which of the following is NOT one
Q9: The degree of erosion in the United
Q10: Which of the following is NOT involved
Q11: Soil formation is due to
A)decomposition of organic
Q12: Arrange the soil particles according to size,from
Q13: In the pressure-flow model of phloem transport,the
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