Which of the following groups contain only biodegradable items? a. Grass, flowers and leather b. Grass, wood and plastic c. Fruit peels, cake and lime juice d. Cake, wood and grass

Solution:

1. a) Grass, flowers and leather
   c) Fruit peels, cake and lime juice
   d) Cake, wood and grass

Above are the groups that contain only biodegradable items. Since plastic is not a biodegradable substance, that group cannot be considered biodegradable.