Question

A farmer was advised not to use a particular type of fertilizer for his next crop after harvesting a crop of peas.give one reason for such an advise.

Answer 1

After harvesting pea crops farmers are generally advised not to use nitrogen fertilizers in the next crop because they contain a type of bacteria Rhizobium leguminosarum on their roots which completes the requirement of nitrogen by fixing atmospheric nitrogen. So, soil become rich in nitrogen and there is no need to apply nitrogen fertilizer for the next crop.
Hope this helps you...

Answer 2

Answer:

Sample 'B' will not freeze at 0°C because it is not pure water. At one atmospheric pressure, the boiling point of pure water is 100°C and the freezing point of pure water is 0°C