Which of the following changes would be likely to make terrestrial life on this planet impossible?

Where was the Kyoto Protocol adopted?

Match the following columns:

Column-$I$	Column-$II$
$(a)$. Ozone thickness	$(i)$. $UV$ rays
$(b)$. $CFC$	$(ii)$. Refrigerator
$(c)$. $El$ Nino effect	$(iii)$. Temperature increase
$(d)$. Skin cancer	$(iv)$. Dobson unit

Consider the following statements about Ramesh Chandra Dagar's work in the field of organic farming:
$I.$ Ramesh Chandra Dagar's work includes bee-keeping,dairy management,water harvesting,composting,and agriculture in a chain of processes.
$II.$ In this process,there is no need to use chemical fertilisers for crops as cattle excreta is used as manure.
$III.$ Crop waste is used for making compost,which is used as natural fertilizer.
$IV.$ Compost generates natural gas,which is used for the energy needs of the farm.
Which of the statements given above are correct?

What is the main idea behind the "Joint Forest Management Concept" introduced by the Government of India?

The limit of $BOD$ prescribed by the Central Pollution Control Board $(CPCB)$ for the discharge of industrial and municipal wastewater into natural surface waters is