Question : Comprehension:
In the following passage, some words have been deleted. Read the passage carefully and select the most appropriate option to fill in each blank.
Nitrogen is essential to life (1)_____Earth. It is a component of all proteins, and it can be (2)________in all living systems. Nitrogen compounds are (3)__________in organic materials, foods, fertilisers, explosives and poisons. Nitrogen is crucial to life, (4)_______in excess it can also be (5)______to the environment.
Question:-
Select the most appropriate option to fill in the blank number 1.
Option 1: at
Option 2: into
Option 3: on
Option 4: in
Correct Answer: on
Solution : The correct choice is the third option .
"On" is the correct preposition that should be used, as it helps specify the location.
Therefore, the complete sentence is: "Nitrogen is essential to life on Earth."
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