Research shows that our world has definitely heated up from a while ago to now

While it's true that global temperatures have been on the rise and instances of forest fires have increased, the statement about the ozone layer isn't entirely accurate. The ozone layer, which was indeed depleting due to the use of certain chemicals like chlorofluorocarbons (CFCs), has been slowly recovering since the implementation of the Montreal Protocol in 1987. This international treaty was designed to protect the ozone layer by phasing out the production of numerous substances responsible for its depletion. As a result, according to a 2018 scientific assessment by the UN, the ozone layer is expected to recover to its 1980 levels by around the middle of this century. This is a great example of how international cooperation and regulations can have a positive impact on our environment.