CFC's were banned because in the upper atmosphere they can decompose ozone under the impact of ultraviolet radiation (which is stronger there) to form free radicals, which then catalyze the decomposition of ozone. Because they act as catalysts, they are not used up in the reaction and can continue to decompose many, many ozone molecules per molecule of CFC.
The ozone layer is the main barrier to ultraviolet light, so weakening it would mean more UV reaching the surface. UV light is deadly to one-celled organisms, and it's not all that great for higher animals either, since it can cause skin cancers.
CFCs have been used in labs as:
* coolants in refrigeration systems * solventsin hydrocaron extraction * solvents for equipment cleaning
All of these tasks can be handled by less ozone damaging materials like HCFCs. Most labs have already converted to these alternates, or fluorocarbon free materials.
They were banned.
In Montreal in Canada in 1987 nations around the world agreed to stop producing CFCs. This agreement, probably the most successful international agreement ever, is called the Montreal Protocol.
Because of this the ozone layer is not longer being damaged (chlorine from the CFCs used to destroy the oxone molecules), and scientists hope that it will have repaired itself by 2060.
If the CFC's that is the chlorofluorocarbons are banned then eventually the ozone hole will replenish. It is because the ozone layer has the tendency to replenish itself in the absence of any other factor.
The consequences will be good. The ozone will try and heal itself.
CFC's if banner would be great. It will do the replenishment of ozone layer.
The atmosphere would shrink in size
The ozone is expected to deplete more. It is because of the use of CFC's.
Cooling coil yes uses CFC's. They destroy ozone.
halons
To avoid thinning, we must stop the use of CFC's. These CFC's react with ozone to deplete it.
Hazards are a common in ozone. CFC's keep destroying ozone.
We can stop CFC's by using their alternatives. A ban has to be placed.
The ozone is expected to deplete more. It is because of the use of CFC's.
Ozone is removed by CFC's. But it is not advisory to use CFC's.
The ozone hole happened when CFC's introduced. It caused due to depleting property of CFC's.
the hole will get bigger
Minimize the use of CFC's. These CFC's are the ones that deplete ozone.
Cooling coil yes uses CFC's. They destroy ozone.
The ozone layer is damaged by the use of CFC's. These CFC's are synthetic miracle compounds used as refrigerants.
halons
The ozone depletion is prevented by avoiding the use of CFC's. CFC's are the chemicals that destroy ozone.
The ozone depletion occurs because of CFC's. They react with it to deplete it.
Ozone is expected to be depleted. It is because of the man made CFC's.