Collateral sprouting substitution of function and neurogenesis are examples of brain

Collateral sprouting substitution of function and neurogenesis are examples of brain plasticity.

Brain plasticity is the ability of the brain to change throughout life. The brain reorganizes itself by producing new neural pathways between the brain cells (neurons). Brain plasticity occurs in the brain at the early stage of life, during brain injury and also through adulthood.  Certain factors such as an individual’s actions, environment, and genetic factors play an important role in plasticity.

the relative atomic mass of an element is the mass of one atom of that element, relative to 1/12th of the mass of a  1212c atom. to convert to an absolute mass in kg, it is necessary to multiply by  1.661×10−271.661×10−27.

the relative atomic mass is roughly equal to the number of neutrons, plus the number of protons, in the nucleus of the atom.

for elements with more than one stable isotope (different types of nucleus with different numbers of neutrons but the same number of protons), the quoted mass is usually the average mass, weighted by the relative abundance of the different isotopes.