2. e nvironment industry

3. greenhouse effect  heating process planets  occurs naturally

4. Ozone Hole

5. Ozone hole  The ozone hole is an annual thinning of the ozone layer over Antartica, caused by stratospheric chlorine. Other more moderate thinnings have also been called "ozone holes", such as that over the North Pole during certain weather conditions.

6. extinction of animal species

7.  An endangered species is a species of organisms that will likely become extinct.  The amount, population trend, and conservation status of each species can be found in the list in organisms.

8.  Source:wikipedia.org  google.com  By Petr Kristen  Ivan Bilinkevych