Mario Molina helped to bring about the 1987 Montreal Protocol on substances that result in depletion of the Ozone Layer.
<h3>What is ozone layer?</h3>
The topmost layer of the atmosphere which protect the harmful UV rays from the Sun to reach the Earth surface.
Mario Molina has the great contribution in science field. He tried hard and succeeded in passing an international agreement to eliminate CFCs also called as Chloro Fluoro Carbons and other ozone-depleting chemicals.
These CFCs were used in jet planes which depleted the ozone layer and a hole was observed over Antarctica.
Learn more about ozone layer.
brainly.com/question/14330630
#SPJ1
When discussing discordant and harmonious sound waves, the
statement that is false is knowing the frequencies of the original waves is
useful in determining if the result will be discordant or harmonious. The
answer is letter B.
W=force × displacement
5400=270× displacement
20meters=displacement
