Grammar Quiz
[ Science ]

What is the level of nitrogen in the atmosphere of the Earth?

A. 70%
B. 15%
C. 7%
D. 5%
E. 2%

Select your answer:
A  B  C  D  E 


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Other quiz: Grammar

This flat is __________________ than the first one.

A. worse

B. bad

C. badder

D. the worst


How to use : Read the question carefully, then select one of the answers button.