Question

What effect did the Montreal Protocol have on Earth's ozone? (1
• It decreased ozone in the stratosphere.
• It moved the ozone hole to the other pole.
• It did not affect the ozone.
• It increased ozone in the stratosphere.

Answer 1

The Montreal Protocol had a positive effect on Earth's ozone. It helped in decreasing ozone-depleting substances in the atmosphere and, as a result, contributed to the recovery of the ozone layer.