Scheme of the volunteer work

This is my part of the work: The Pollution.

1-. Definition of pollution.

2-. The increase of the pollution in Extremadura.

- Numbers of emission of pollutant fountains.

- Types of companies that emit pollutant gases.

- Increase of pollution in a period of time.

- Types of gases that are emitted.

3-. The tench like indicator of the level of aquatic pollution.

- The person who realized the thesis.

- Steps to realize the thesis.

- Conclusion of the thesis.

VIRGINIA ORTIZ HERRERA