The excess of nitrogen oxide and sulphur dioxide form nitric acid and sulphuric acid which cause acid rain.Â
The ratio of zinc phosphide in poison bait for rats is:
The following is not a characteristic of land
Which of the following statement is not true about fluorescent pseudomonas?
A biodiversity hotspot is a biogeographic region with significant levels of biodiversity that is threatened by human habitation. Which one of the follow...
Heat period of buffalo is:
Hisar Sugandh (DH-36 ) is an important variety of..............crop.
Major gases in soil are Nâ‚‚, Oâ‚‚, and _____.
The unit of pressure designated by international system (SI) is
Tea is on of the most important beverage crop, generally grown in acidic soil. The astringent taste in tea is due to the presence of ………………â...
Role of extension education in india is perfomed by
