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Biology 11

Biology 11. Outline. 1. Overall introduction. 2. Stand point. 3. Picture. 4. Several reasons for supporting. 5. Conclusion. 6. Citation. Overall introduction. Fossil fuel emission and the cutting of rain forests can cause serious problems ！. Stand point.

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Biology 11

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  1. Biology 11

  2. Outline 1 Overall introduction 2 Stand point 3 Picture 4 Several reasons for supporting 5 Conclusion 6 Citation

  3. Overall introduction Fossil fuel emission and the cutting of rain forests can cause serious problems！

  4. Stand point • It is widely believed that legislation should be introduced to reduce fossil fuels emission and the cutting of rain forests. • As far as we concerned, we agree with the idea.

  5. The cutting of rain forests

  6. Fossil fuels emission

  7. Supporting Details 1 The formation of climate change 2 Problem of acid rain 3 Desertification 4 Disturb the balance of ecosystem

  8. Climate change • Climate change is the caused by the effects that human bring. • Climate change is caused by factors such as biotic processes, variations in solar radiation received by Earth, plate tectonics, and volcanic eruptions.

  9. Acid rain • Acid rain is a rain or any other form of precipitation that is unusually acidic, meaning that it possesses elevated levels of hydrogen ions (low pH).

  10. Acid Rain • Acid rain is caused by the pollution of fossil fuels.

  11. Acid rain Plants damaged Adverse effect Surface waters and aquatic ani-mals Human health effects Other adverse effects Soils

  12. Acid rain

  13. Desertification • Desertification is a type of land degradation in which a relatively dry land region becomes increasingly arid, typically losing its bodies of water as well as vegetation and wildlife. • It is caused by a variety of factors, such as climate change and human activities. • Desertification is a significant global ecological and environmental problem

  14. Desertification

  15. The effects to ecosystem • The definition of ecosystem is a community of living organisms in conjunction with the nonliving components of their environment , interacting as a system. • You can see that ecosystem is very impotant to us.

  16. Conclusion • Overall , our conclusion is that fossil fuels emission is bad to our ecosystem. We think legislation should be introduced to reduce fossil fuels emission and the cutting of rain forests.

  17. Citation • "Acid rain" wikipedia.org. 6 Nov. 2013. Web. 6 Nov. 2013. • "Desertification" wikipedia.org. 24 Oct. 2013. Web. 6 Nov. 2013.

  18. Thank you

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