our Turn: Key Point Ideas Key Points from Sources 2. causes of global warming 3. definition of greenhouse effect 1. effects of global warming 5. possible conclusion
It is caused by increased concentrations of greenhouse gases in the atmosphere.
EXAMPLES:
•Weather May Become More Extreme.
•Melting Ice Affects the Whole WorldChanging Oceans Change Climate.
•Together, We Can Slow Climate Change.
2.definition of greenhouse effect.
ANSWER:
When the Sun's energy reaches the Earth's atmospher
EXAMPLES:
•Solar radiation reaches the Earth's atmosphere - some of this is reflected back into space.
Solar radiation reaches the Earth's atmosphere - some of this is reflected back into space.•The rest of the sun's energy is absorbed by the land and the oceans, heating the Earth.
•Heat radiates from Earth towards space.
3.effects of global warming
ANSWER:
Global warming stresses ecosystems through temperature rises, water shortages, increased fire threats, drought, weed and pest invasions, intense storm damage and salt invasion, just to name a few.
