Name the two principles in which food preservation methods are based.

1.inactivating enzyme

2.removal of microorganisms or inactivating them

Explanation:

1. Methods based on the principle of biosis, that is, maintaining life processes in the raw materials and use of its natural immunity.

2. Methods based on the principle of anabiosis, that is, slowing, suppressing the vital activity of microorganisms and vegetable raw materials with the help of various physical, chemical and biological factors.

age range would be the answer

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.