The highest DDT concentration in aquatic food chain shall occur in:

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Important Questions on Environmental Issues

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Biology Crash Course NEET>Chapter 38 - Environmental Issues>Level 2>Q 3

Biological Oxygen Demand (BOD) is a measure of:

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Biology Crash Course NEET>Chapter 38 - Environmental Issues>Level 2>Q 4

Nitrogen oxides produced from the emission of automobiles and power plants, are the source of fine airborne particles which lead to:

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Biology Crash Course NEET>Chapter 38 - Environmental Issues>Level 2>Q 5

A lake with an inflow of domestic sewage rich in organic waste may result in:

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Biology Crash Course NEET>Chapter 38 - Environmental Issues>Level 2>Q 6

Identify the correctly matched pair:

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Biology Crash Course NEET>Chapter 38 - Environmental Issues>Level 2>Q 7

Which of the following statements regarding eutrophication are correct?
(i) Eutrophication is the natural ageing of a lake by nutrient enrichment of its water.
(ii) Pollutants from human activities like effluents from the industries and homes can radically accelerate the aging process of a lake. This phenomenon is called as cultural or accelerated eutrophication.
(iii) The plant nutrients responsible for eutrophication are nitrates and phosphates.
(iv) These phosphates and nitrates accelerate the growth of algae, which utilise oxygen and may deoxygenate the water to kill the fish and other aquatic animals.

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Biology Crash Course NEET>Chapter 38 - Environmental Issues>Level 2>Q 8

Which of the following statements is correct?

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Biology Crash Course NEET>Chapter 38 - Environmental Issues>Level 2>Q 9

Read and select the incorrect option about desertification.

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