Q. How many states agreed to reduce CFC by 50%?

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Q. The Montreal Protocol was revised and strengthened again in

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Q. 22 states agreed to reduce CFC by 50% in

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Q. How many states agreed to eliminate all CFCs?

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Q. Montreal Protocol came on

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Q. In 2005 a Chemical spill in northeast China polluted a river flow in

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Q. Meltdown at to Soviet nuclear power plant at Chernobyl in

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Q. When did the 100 states sign the treaty under UN to control the shipment of toxic and nuclear wastes?

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Q. Population creates a collective

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Q. How many states signed the treaty under UN to control the shipment of toxic and nuclear wastes?

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Q. Meltdown at to Soviet nuclear power plant at Chernobyl in Ukraine in

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Q. When did a chemical spill in northeast China pollute a river?

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Q. US Canadian border had become heavily polluted by

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Q. 24 European states signed a treaty to limit nitrogen oxide in

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Q. When did US forces pass a obstruct oil pipeline near Iraq?

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Q. US forces pass a obstruct oil pipeline near

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Q. In 2006 the worlds population was

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Q. When did Brazil announce that deforestation had fallen by 50%?

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Q. Half of the world's species live in

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Q. When did the government adopt sweeping new policies to balance the economic exploitation of the Amazon basin?

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