Which is greatest threat to world?

December 24, 2015 1:02am CST
There are many threats to world. All countries are facing threats like terrorism, climate change, lack of clean water, cyclone, earthquake. Which threat should be controlled on priority.?
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2 responses
@Plethos (11507)
• United States
24 Dec 15
terrorism- because those guys want us all to live in the stone age and without science. and without science we cant cure common illnesses or adjust to earths changes.
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@youless (94247)
• Guangzhou, China
24 Dec 15
Actually I am very worried about the terrorism because many innocent people will be involved in it. And the terrorism attack in Paris still left me shadow. It is horrible for a big global city had such kind of attack.
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