Particles as small as atoms exist.
<em>Yes</em> the blood cells have a rigid of cell walls as their cell walls are cell membrane.
Answer:
The correct answer is the first option
Explanation: hope this helped
The average atomic mass of N2 is 14.0067. The atomic masses of the 2 stable isotopes of nitrogen, N-14 and N-15, are14.003074002 and 15.00010897 amu, respectively. Calculate the percent abundance of each nitrogen isotope. Ex.: The average atomic weight of copper is 63.5amu .
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