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
(a), (c), (d)
The substance plastic in (b) is a non-biodegradable substance.
All the other mentioned substances are biodegradable.
Subscribe to our Youtube Channel - https://you.tube/teachoo