environmental time line
Category: Other
Updated: 14 Oct 2017
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Created byessey ephrem
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Events
the clean air act is passed in the united statesworld population reaches 4 billionmt st. helens erupts in washington statebophal disasterworld population reaches 5 billionthe Montreal treaty was createdthe Kyoto protocol was signedworld population reaches 6 billionthe industrial revolutionthe volcano Laki erupts in ice landworld population reaches one billionWorld population reaches 2 billionworld population reaches 3 billionPeriods
mt. Tambora erupts in Indonesiaworld war 1world war 2
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