A.___

B.___

C.___

D.___

E.___

pile: a number of things that have been placed on top of each other

fruit peel: the thick skin of some fruits and vegetables

compost: a mixture of naturally decomposed plants, food, etc. that can be added to soil to help plants grow

household waste: waste material produced in home environment

layer: a piece of material or amount of something between two other things