Question

M	E	T	H	A	N	E
I	C	O	O	M	O	C
R	E	N	Z	N	M	T
M	O	C	O	R	A	L
A	T	R	N	O	G	E
O	E	D	E	X	I	O

Look at the given grid carefully. Which of the following is not given in the grid?

• A. Gas produced when synthetic fertilisers are used in agriculture.
• B. Gas produced in wetlands by microbes
• C. Most affected underwater species by the increase in greenhouse gases in the atmosphere.
• D. Depletion of this layer results in an increase in ultraviolet radiation

Answer 1

Answer: (A)

In the given grid the following are the things mentioned:

1) Methane (top row)- Gas produced in wetlands by microbes. Wetlands are an important source of methane production (methanogenesis).

2) Coral (the fourth row starting from the third column left to right)- These are the most affected underwater species by the increase in greenhouse gases in the atmosphere. The coral reefs are dying because of the ocean acidification.

3) Ozone (fourth column from the left top to bottom)- The ozone layer is a shield that protects the Earth from the harmful ultraviolet rays from the sun. But with the increase in global warming the depletion of this layer has resulted in an increase in ultraviolet radiation.

Hence, the item not mentioned in the grid is the gas produced when synthetic fertilizers are used in agriculture, i.e., nitrous oxide.