Which of the following groups contain only biodegradable items?
Question.
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:

(c) Fruit-peels, cake and lime-juice

(d) Cake, wood and grass
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