Chicken, a lean protein, can be prepared in many healthy ways.
Natural selection is when certain environmental qualities cause a species to evolve in order to survive in the environment. Natural selection is a specific part of that, when some of the variations of the species die off because they can't survive, then the ones who survive live to create more living babies with the qualities that allow them to survive in the environment.
A carbon atom has four electrons in it’s balance shell. as the maximum number of electrons that can be within the second shell of electrons is eight, it is able to bond with four other atoms in order to have a full shell of electrons.
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