WAEC - Agricultural Science (2009 - No. 25)
A bag of fertilizer had a ratio of 0:10:0 written on it. This means that the fertilizer contains
0 kg of nitrogen, 10 kg of potash and 0 kg of phosphate
0 kg of phosphate, 10 kg of nitrogen and 0 kg of potash
0 kg of nitrogen, 10 kg of phosphate and 0 kg of potash
0 kg of potash, 10 kg of phosphate and 0 kg of nitrogen