Questions

Guglielmo Marconi, an Italian invetor invented Radio in 1890's.

main()

{

   char *str[] = { "Frogs", "Do", "Not", "Die." , "They", "Croak!" };

   int i;

         for ( i = 0;i<=5;i++)

         printf ("\n%s%d", str[i], strlen( str[i]));

}

The building blocks of the nucleic acids are "Nucleotides".

Each nucleotide are composed of three parts. They are ::

1.Pentose sugar

2.Nitrogenous bases

3.Phosphoric acid.

‘has’ should be replaced with ‘have’.

Isotopes are atoms of the same element that have different mass numbers.

Example : Hydrogen, Deutirium and tritium all these have different mass but same atomic numbers.