After drying to eliminate the water in plant litter, which two elements account for about 80 of the dry weight?
A) N and C B) Ca and C C) C and H D) N and S E) C and O
Question 2
Which of the following added to a soil would be likely to result in the greatest level of soil organic matter after several years of decomposition?
A) the compost produced by composting 5 Mg of plant leaf material
B) the manure produced by feeding cattle 5 Mg carbon in plant residues
C) 5 Mg of carbon in plant roots
D) 5 Mg of carbon in plant tops