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Biological Oxygen Demand (BOD) is a standard criterion for _______.
(a)Measuring oxygen levels in blood
(b)Computing oxygen levels in forest ecosystems
(c)Pollution assay in aquatic ecosystems
(d)Assessing oxygen levels in high altitude regions

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Important Questions on Environment and Ecology
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Kaziranga National Park is situated in which state of India?

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The percentage of nitrogen in the air is about:
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2.
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4.

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In which state is the World Heritage site 'Basilica of Bom Jesus' located?

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The _____ National Park, located in West Bengal, is one of the largest tiger reserves of our country.

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