Terms and Purposes
The treaty is structured around several groups of halogenated hydrocarbons that have been shown to play a role in ozone depletion. All of these ozone depleting substances contain either chlorine or bromine (substances containing only fluorine do not harm the ozone layer). For a table of ozone-depleting substances see:
For each group, including group ST, the treaty provides a timetable on which the production of those substances must be phased out and eventually eliminated.
Read more about this topic: Montreal Protocol
Famous quotes containing the words terms and/or purposes:
“For my part, if a lie may do thee grace,
I’ll gild it with the happiest terms I have.”
—William Shakespeare (1564–1616)
“O, I am smitten with a hatchet’s jaw;
And that in deed and not in word alone.
chorus: I thought I heard a sound within the house
Unlike the voice of one that jumps for joy.
He splits my skull, not in a friendly way,
Once more: he purposes to kill me dead”
—A.E. (Alfred Edward)