NTPC CBT-2 Biology Quiz - 38

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Question 1:

By which of the following the Sound in humans is produced by ?

Question 2:

The branch of science that studies cells is called -

Question 3:

The study of Improvement of human race by improving environment is known as ?

Question 4:

By which tissue, muscles are connected to bones?

Question 5:

Deficiency of fluoride in adults results in which of the following health problems?