Organisms need energy to conduct essential life activities. Basically, energy is essential to every organisms because it is their source of power to get food and to reproduce. Without it, organisms would not function properly and will soon die.
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Neutrons
The atomic mass is the weight of the protons and neutrons in the nucleus.
Be there for them and let them know they're not alone.
Your white blood cells will attack your heathly cells because they are confused