Name three conservation law from nature

Conservation Laws: A conservation law is a hypothesis based on observation and experiments which cannot be proved. These can be verified via experiments.

Law of conservation of Energy: According to the general Law of conservation of energy, the energies remain constant over time and convert from one form to another. The law of conservation of energy applies to the whole universe and it is believed that the total energy of the universe remains unchanged.
Under identical conditions, the nature produces symmetric results at different time.

Law of conservation of Mass: This is a principle used in analysis of chemical reactions. A chemical reaction is basically a rearrangement of atoms among different molecules. If the total binding energy of the reacting molecules is less than the total binding energy of the product molecules, the difference appears as heat and the reaction is exothermic.

The opposite is true for energy absorbing (endothermic) reactions.

Since the atoms are merely rearranged but not destroyed, the total mass of the reactants is the same as the total mass of the products in a chemical reaction.

Mass is related to energy through Einstein theory,

E = mc2, c – speed of light in vacuum

Law of conservation of linear momentum: Symmetry of laws of nature with respect to translation in space is termed as law of conservation of linear momentum.

Example law of gravitation is same on earth and moon even if the acceleration due to gravity at moon is 1/6th than that at earth.

Law of conservation of angular momentum: Isotropy of space (no intrinsically preferred direction in space) underlies the law of conservation of angular momentum.