In an experiment to determine the percentage of humus con...
In an experiment to determine the percentage of humus content in a soil, the following results were obtained:
mass of dish = 10 gm
mass of dish and oven-dry soil = 50 gm
mass of dish and soil after heating = 40 gm
Calculate the percentage of humus in the soil sample.
10%
25%
60%
75%
80%
Correct answer is B
No explanation has been provided for this answer.
Which of the following is not a sign of animal approaching parturition? ...
One of the main disadvantages of mechanical tillage is the ...
Which of the following is not a function of forestry? ...
The animal dungs are used as_____to improve the soil fertility. ...
Which of these groups of crops require nursery for their successful cultivation? ...
Theobroma cacao grows best in the ...
Which of the following characteristics is not important in beef cattle breeding? ...
Most farm business fail because of ...