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UPSC CSE Prelims
2013
Q33 — Environment & Ecology

UPSC CSE Prelims 2013 Q33 — Environment & Ecology PYQ with Answer

2013Q33·Environment & Ecology·Sustainable Agriculture & Forestry

Consider the following organisms:

1. Agaricus

2. Nostoc

3. Spirogyra

Which of the above is/are used as biofertilizer/biofertilizers?

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Consider the following pairs: National Park : River flowing through the Park 1....

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Which of the following adds/add nitrogen to the soil? 1. Excretion of urea by a...

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