Are defined as necessary food substances
carbohydrates
Olive oil is a food substance, Sugar is a food substance etc.
A medium is defined as any substance through which wave energy travels.
The amount of substance per unit of volume is defined as concentration in terms of chemistry. The amount of substance refers to the quantity over the volume.
Melting is the term defined as the process by which a substance changes state from solid to liquid.
Temperature is defined as a measure of the energy of motion of particles in a substance.
A substance that has a defined volume but an undefined shape is a liquid. Liquids take the shape of their container but maintain a fixed volume.
The identity of a substance (chemical compound) is defined by his chemical formula and molecular structure.
DNA
chlorophyll
oxygen
Why is it necessary for food to digested