What is the main difference between organisms that share many characteristics of organisms that do not? Please answer ASAP!!

Chen drew a diagram to compare the ways in which different organisms obtain nitrogen. which label belongs to the area marked z?

He table below gives the atomic mass and relative abundance values for the three isotopes of element m. relative abundance (%) atomic mass (amu) 78.99 23.9850 10.00 24.9858 11.01 25.9826 what is the average atomic mass (in amu) of element m? 2.86 5.36 24.30 24.98

If an atom has 12 protons and 13 neutrons