........................MCQ.......................
the following pairs of elements are relatively abundant in living organisms than in Earth crust......
a) Oxygen, Nitrogen
b) Magnesium, Carbon
c) Carbon, Sodium
d) Carbon, Hydrogen
Answers
Answered by
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( A ) Oxygen , Nitrogen
It is the correct answer of your question mate ....
Answered by
1
Answer:
a is the answer of your questions
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