Focus on Global Warming

How have humans contributed to the rising concentration of greenhouse gases? Carbon dioxide Methane Nitrogen oxide Our factories, power plants, and cars burn coal and gasoline and ________a seemingly endless stream of carbon dioxide. spit out produce We __________millions of pounds of methane by allowing our trash to decompose in landfills and by breeding large herds of methane-belching cattle. The nitrogen-based fertilizers we use _______unnatural amounts of nitrogen oxide into the atmosphere. release

Greenhouse Gases 碳氟化合物 氧化亚氮

How would the change in climate affect people’s life? slight increase in heat and rain moderate rise in sea level more intense rain and hurricanes hotter summers and warmer temperatures across the globe an increase in vector diseases such as malaria threat to the coastlines of low-lying islands severe flooding and more deaths more cases of heart stroke and deaths; more hospital admissions for those with respiratory problems

What are the actions we should take to slow global warming? immediate actions some strategies long-term policies to cut our consumption of fossil fuels; to use technologies to reduce the emission of greenhouse gases; to protect our forests to reduce our vulnerability to global warming. to encourage people to use environmentally clean fuels and technologies; to stop the clear-cutting of forests