ch.3 pollution.htm

4 Summary

Pollution is caused when resources are extracted, processed, and when products are manufactured and used. Pollution usually manifests itself in the form of a solid, liquid or a gas emission. Pollutants enter the environment through human activities that impact on the environment and health through chemical, physical or bacteriological factors. Various strategies have been developed to mitigate the effects of pollution. Unfortunately these strategies are expensive to implement and may take years to have the desired effect. Althougth environmaental protection is a difficult job, humans should accept the responsibily to cherish the Earth.In the next chapter, we will try to study tropic.


4 Summary Pollution is caused when resources are extracted, processed, and when products are manufactured and used. Pollution usually manifests itself in the form of a solid, liquid or a gas emission. Pollutants enter the environment through human activities that impact on the environment and health through chemical, physical or bacteriological factors. Various strategies have been developed to mitigate the effects of pollution. Unfortunately these strategies are expensive to implement and may take years to have the desired effect. Althougth environmaental protection is a difficult job, humans should accept the responsibily to cherish the Earth.In the next chapter, we will try to study tropic.