Question

To meet the provisions of the Montreal Protocol, the production and consumption of carbon tetrachloride and methyl chloroform are phased out. Which of the following best describes the result of removing these chemicals from consumption?

O Increase in smog
O Increase in acid deposition
O Decrease in global warming
O Decrease in ozone loss

Answer 1

Phasing out carbon tetrachloride and methyl chloroform leads to a decrease in ozone loss, as these substances contribute to ozone depletion by releasing chlorine or bromine. The correct answer is option d. Decrease in ozone loss.

Step-by-step explanation:

The phasing out of carbon tetrachloride and methyl chloroform under the provisions of the Montreal Protocol would result in a decrease in ozone loss. These substances are known as ozone-depleting substances (ODS) because they release chlorine or bromine when exposed to intense ultraviolet (UV) light in the stratosphere, which contributes to the depletion of the ozone layer. The protocol is designed to protect the ozone layer by controlling the production and emission of these harmful chemicals. Reduction in the use of ODS has led to the recovery of the ozone layer, which had been manifested by a shrinking of the ozone "holes" reported by scientists over time. The Montreal Protocol is an example of global cooperation to tackle environmental problems and has been effective, with signs of recovery in the ozone layer.