They noticed the UV patterns. UV rays at the poles were higher than expected.
Ozone disappearance is a problem. It is because it allows the UV rays to pass through.
The scientists have discovered ozone hole due to technology. Advancements led them to find it.
Ozone depletion is addressed as the formation of holes in the ozone. It causes increase in the temperature.
People did not discover about it, scientists did. They did it in 1985.
They noticed the UV patterns. More UV led to ozone depletion cause.
Is a process used by scientists to find answers to questions or solve a problem
They did it in 1880. It is a layer of ozone molecules.
There is an ozone layer. Scientists have confirmed that.
Scientists hope the ozone layer will have recovered by around 2050.
Ozone is present in the stratosphere of the earth's atmosphere. It is in this region that the scientists are concerned.
Scientists are able to track ozone hole. New technology has enabled them to do so.
Scientists are concerned about the ozone hole. They are trying to ban the CFC's over the world.