global warming and climate change

• what is the atmosphere surrounded by and why?

  protective layer of gases, acts like insulating layer to trap some of suns heat
• how earth heated

  heat from sun enters Earth's atmosphere and warms surface of Earth. earth's surface become hotter and radiate heat back out. some of heat absorbed by greenhouse gases. gases radiate heat back toward Earth. earth become warmer
• What is global warming?

  increase in Earth average surface temperature due to rising levels of greenhouse gases
• What is climate change?

  long term change in Earth climate
• What are some effects go global warming?

  cause sea water expand and ice melt sea level rise. distribution of organisms change as temperature increases change amount of rainfall. reduce biodiversity/ change migration patterns