D. 1. Because of waste materials and substances.
2. Very few have shown interest.
3. If the average temeprature rises, this will melt the polar ice caps which will result in the rise of world's ocean level by twelve to eighteen feet.
E. 1. it: waste
3. they: scientists
4. this: if the polar ice caps melt
F. 1. make less attractive: eyesore
5.to dispose of:attempts