Teaching BPSC 4.0 बिहार उच्च माध्यमिक शिक्षक भर्ती (PGT) Mock Test General Science Biology Ecology & Environment
The Earth Summit held in Rio de Janeiro in 1992 was called :
1
to reduce CO2 emissions and global warming.
2
for conservation of biodiversity and sustainable utilization of its benefits.
3
to assess threat posed to native species by invasive weed species.
4
More than one of the above
5
None of the above