We should encourage the use of plastics as they are biodegradable.
Disposable plastic plates should not be used because
(a) they are made of lightweight materials.
(b) they are made of toxic materials.
(c) they are made of biodegradable materials.
(d) they are made of non-biodegradable materials.
Question 21 Disposable plastic plates should not be used because (a) they are made of materials with lightweight (b) they are made of toxic materials (c) they are made of biodegradable materials (d) they are made of non-biodegradable materials