Environmental Issues — Prelims Questions

Which of the following statements regarding Biochemical Oxygen Demand (BOD) is correct?

Which of the following is a secondary air pollutant?

Biomagnification is the increase in concentration of a toxic substance at successive trophic levels. Which of the following substances is known to undergo significant biomagnification?

The 'ozone hole' refers to the thinning of the ozone layer, primarily over the Antarctic. Which international agreement was instrumental in phasing out the production of ozone-depleting substances?

Which of the following is NOT a consequence of deforestation?

Which of the following methods is considered the most effective and environmentally sound way to manage municipal solid waste?