Consider the following pairs.
$1$. Nokrek Biosphere Reserve: Garo Hills
$2$. Logtak (Loktak) Lake: Barail Range
$3$. Namdapha: Dafla Hills National Park
Which of the above pairs is/are correctly matched?

Which of the following states has the maximum number of tigers?

What is the primary reason for targeting 'biodiversity hotspots' for conservation?

In which of the following the maximum plant diversity is found?

The term biodiversity refers to the totality of genes, species and ecosystem of a region. It differs from place to place. Biologically rich and unique habitats are being destroyed, fragmented and degraded due to problems of the world's pressing crises. The primary reason for the concern is the realisation that:
$1$. Biological diversity is a compact set that does not include genetic differences within each species.
$2$. Biological diversity is being lost even before its size is known.
Which of the statements given above is/are correct?

Which of the following conditions indicate the impact of global warming?

$1$. Melting of glaciers
$2$. Lowering down of sea level
$3$. Changes in weather conditions
$4$. Rise in global temperature.
Select the correct answer from the codes given below:

The United Nations Environment Programme (UNEP) was launched in __________.