Final answer:
The statement about taking 'rubber off SM' is likely a confusion or typo. It might refer to the need to manage or dispose of ozone-depleting substances like halons or CFCs to protect the ozone layer.
Step-by-step explanation:
The question seems to relate to the prevention of ozone depletion. The term 'rubber' here is likely a typo or a misunderstanding. In the context of ozone layer protection, a material called halon used in fire extinguishers, or chlorofluorocarbons (CFCs) used in various industrial applications, must be carefully managed or removed. Halons and CFCs are ozone-depleting substances that can destroy ozone molecules in the stratosphere, leading to an increase in ultraviolet (UV) radiation reaching the Earth, which in turn could cause health problems such as skin cancer and cataracts, and environmental issues like reduced agricultural productivity.
International efforts to reduce and eventually phase out the use of ozone-depleting substances, such as the 1987 Montreal Protocol, have been under implementation. In this context, the 'rubber must be taken off SM' statement may refer to the need for properly disposing or managing substances or materials that contain or release ozone-depleting substances to prevent further harm to the ozone layer.