This question refers to cell and organism respiration. Respiration involves the uptake of oxygen which is necessary along with glucose to create the energy that drives life itself.
The correct spelling is "necessary."
Neither is correct. You say "If you feel it is necessary" or "If you feel that it is necessary."
The suffix for "necessary" is "-ary".
The correct spelling of necessary is necessary. Very simple. ( Actually it's in the question.)
more necessary, most necessary
They are not necessary!
he is not necessary
unecessary
It's only necessary because people make it necessary.
are u sure it really is necessary? i mean it could be necessary as a hoax.
yes the wick is necessary
its necessary when it is