1.plastic bags are very hard to dissolve 
2. water pollution is very hard to reduce 
3. it is hard to prevent deforestation 
4.puplis keep the schoolyard clean 
5. we keep the air unpolluted 
6.everyone should  keep the environment clean 
7.we prevent lazy pipils from throwing litter 
8. we prevent everyone from using electricity to catch fish 
9. we prevent everyoner from polluted air and water 
10. we use banana leaves to wrap food 
11. people use dynamite to catch fish 
12. people use pesticide to kill insects
13. we recycle used bottles and cans instead of putting them garbage bins 
14. we use public buses instead of motorbikes
15. we use banana leaves to wrap food instead of plastic bags