Question:

The Earth Summit held in Rio de Janeiro in 1992 was called?

For conservation of biodiversity and sustainable utilization of its benefits

For immediate steps to discontinue use of CFCs that were damaging the ozone layer

To reduce CO2 emissions and global warming

To assess treat posed to native species by invasive weed species

Solution:

Correct option is B. For conservation of biodiversity and sustainable utilization of its benefits. Earth Summit (Rio Summit)-1992, called upon all nations to take appropriate measures for conservation of biodiversity and sustainable utilisation of its benefits. So, the correct answer is 'For conservation of biodiversity and sustainable utilization of its benefits'.