The statement is - True.
The solvent do contains chlorofluorocarbons (CFC) and hydrochlorofluorocarbons (HCFC) which evaporate and enter the atmosphere. Because they are very light, the CFC and HCFC manage to get very high into the atmosphere, reaching the ozone layer in the stratosphere. They are actually the two substances that are the most damaging to ozone layer, as once they get in touch with it, they break down its structure, thus creating the ozone holes.
The ozone is crucial for the survival of the living organisms on the Earth as it is the layer that manages to stop most of the ultraviolet rays form the Sun to reach the surface. Because of that, these two substances have to be replaced quickly as the ozone layer is becoming more and more damaged, and that can eventually lead to a tragedy.
Since you provide no picture, i will list each of the river's location so you could pinpoint it on the map :
- Murray River : near the australian alps
- Darling River : on northern new south wales
- Waikato River : On new zealand
- Sunderland falls : Southern part of new zealand
Hope this helps
I’ll try my best to explain this. Mount Everest was once submerged in water/ sea and it became a mountain by geological forces/ earthquakes since it was at one point in the sea it has seashells on the top caused from uplift. Hope this helps