Answer:
A carbon atom can form up to four covalent bonds as one carbon atom has four valence electrons (in outermost shell). It is a fact that the number of valence electrons in a atom determines the number of covalent bonds it will form. Thus, each electron in carbon atom is used to form four covalent bonds with various four atoms.
Explanation:
A bond between a carbon and hydrogen atom is a non-polar covalent bond. The non-polar covalent bond are the bonds between two atoms which share equal number of electron(s) with each other. Example: as in case of methane, where one carbon atom shares its 4 outer valence electrons with four hydrogens by sharing equal number of electron.
In contrast, polar covalant bond are the bonds between two atoms which share unequal number of electron(s) with each other. Thus these bonds are partially ionic.
Not always because there could be birth defects, mutations, or other variables.
The difference is that photosynthesis occurs in the chloroplasts and cellular respiration occurs in the mitochondria. Another difference is the reactants for photosynthesis are different than the reactants for cellular respiration. One more difference is in photosynthesis you capture Energy from the sun and change it into food and cellular respiration is the process by which cells use oxygen to break down food and produce.
