Question
In organic farming diseases are controlled by _______ and ________ methods.
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Name a vaccination which provides lifelong immunity.
Which one is called plant-animal?
Give two examples of pteridophytes.
Name the group of vascular cryptogams.
Name the first class of terrestrial chordates.
What is biosphere?
Name the common air pollutant which causes depletion of ozone layer.
Name the muscle fibre which contains intercalated discs.