1.Earth is getting warmer£¬ which is a politically sensitiveissue causing many creatures across the world to have starved or even died£¬ according to some broadcasts. For this phenomenon£¬ the "greenhouse effect" is to blame. Naturally£¬ when the heat from the earth is released back into space£¬ greenhouse gases in the atmosphere trap some£¬ keeping Earth’s climate in a harmonious way to sustain life. However£¬ human activities like burning fossil fuels produce too many greenhouse gases£¬ which cause a rise in temperature on Earth. Luckily£¬ governments worldwide are planning reforms and comprehensive policies to restrict greenhouse gas emissions£¬ along with the efforts of enterprises and the public.

2.Nobody can tolerate living in a hot pot. There is no doubt that mankind has to submit to some urgent problems — the warming trend of Earth and the consequent problems like the melting ice£¬ frequent extreme weather and ecologicalchaos. There is so much we must do and we can do. We£¬ as individuals£¬ can reduce our "carbon footprint" indozens of ways. On behalf of the young£¬ I will seize every opportunity to play a role in the environmental conservation campaign.