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  1. Which one of the following proved effective for biological control of nematodal
  2. A certain patient is suspected to be suffering from Acquired Immuno Deficiency Syndrome
  3. The offsprings produced through which of the following process are not exactly
  4. Given below is the ECG of a normal human. Which one of itss components
  5. Rapid decline in the population, due to high mortality rate, is called