World Leaders Meet for Historic Climate Change Talks
Representatives from 196 countries have gathered in Paris this week to discuss climate change. The goal of the 21st session of the Conference of Parties (COP21) is to formulate an action plan to reduce greenhouse gas emissions and limit global warming. Scientists have warned that if global temperatures rise more than 2C above pre-industrial averages, the damage will likely be catastrophic and irreversible. Security for delegates is at an all-time-high due to the recent terror attacks in Paris.
1.due to 由于
例句：Due to the internal rebellion within the army.
2.climate change 气候变化
例句：We are all victims of climate change.
3.greenhouse gas 温室气体
例句：But these two countries are responsible for almost half of all greenhouse gas emissions.
4.global warming 全球变暖
例句：We do not fight global warming because it is futile to do so.