1+D

=>water pollution:is it the contamination of lakes,rivers,oceans or groundwater,usually by human activities

2+E

=>poison:a substance that can make people or animals ill or kill them if they eat or drink it

3+A

=>land/soid pollution:it happens when human activities destroy the earth's surface

4+H

=>dump:throwing away something you don't want ,expecially in a place which is not allowed

5+C

=>aqutic:growing or living in,on or near water

6+B

=>light pollution:too much use of electric lights in the cities may cause it.

7+F

=>radioactive pollution:it happens when radiation goes into the land,air or water

8+G

=>polluted: made unclean or unsafe to use