Teaching BPSC बिहार माध्यमिक TGT (9 to 10) शिक्षक भर्ती 4.0 Mock Test People Development & Environment Environmental Issues Ozone Layer Depletion
Ozone hole is considered harmful to us because
1
it can increase global warming
2
it allows UV radiations to reach earth which may cause skin cancer
3
it may allow entry of toxic gases from other planets
4
More than one of the above
5
None of the above