Question

story on environment conservation?

Answer 1

Answer:

 wasn't too long ago — the mid-1980s, to be exact — that scientists made a deeply troubling discovery: The ozone layer of Earth, which shields us from the sun's dangerous ultraviolet rays, each spring opened a massive hole over Antarctica. Even worse, the ozone layer all around the world was also being steadily thinned. This supported assertions of ozone depletion going back to the 1970s.

The chief culprit was chlorofluorocarbons (CFCs), chemicals that were used at the time in common items like hairspray and refrigerants. Skin cancer, cataracts, severe harm to plants and animals — studies that followed the discovery painted a dire picture of future human existence, if we didn't do something quick to stop it.