NASA | Why is the Ozone Hole Getting Smaller?

The video discusses the history and recovery of the ozone layer, highlighting the impact of the 1987 Montreal Protocol in reducing ozone-depleting substances. It notes the current size of the ozone hole, which is smaller than in previous years, and explores the role of rising stratospheric temperatures in this recovery. Scientists are investigating the relative contributions of reduced chemicals and temperature changes to the ozone layer's improvement.

What was the main reason for the halt in the growth of ozone-depleting substances in the late 90s?

• Natural reduction in emissions

• Technological advancements

• Increased public awareness

• The 1987 Montreal Protocol

How does the current size of the ozone hole compare to past years?

• It has disappeared completely

• It is the same size as always

• It is smaller than in past years

• It is larger than ever before

Which organization is responsible for observing the ozone hole's size?

• NASA and Noah

• United Nations

• World Health Organization

• European Space Agency

What effect do warmer temperatures in the stratosphere have on the ozone hole?

• They have no effect on the ozone hole

• They lead to a smaller ozone hole

• They cause the ozone hole to move

• They increase the size of the ozone hole

What are scientists currently investigating about the ozone hole's recovery?

• The role of ocean currents

• The impact of volcanic eruptions

• The effect of solar flares

• The balance between temperature changes and chemical reductions