Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test Environmental Studies Environment Pollution
Disposable plastic plates which are thrown away after eating food, should not be done because -
1
they are made of materials with light weight.
2
they are made of toxic materials.
3
they are made of non-biodegradable materials.
4
More than one of the above
5
None of the above