Answer:
A physical property is a characteristic of a substance that can be observed or measured without changing the identity of the substance. Physical properties include color, density, hardness, and melting and boiling points. ... To identify a chemical property, we look for a chemical change.
Answer:
i want to say 6 but I am not sure
The biosphere. This is the layer that contains all life on the planet.
The word is scientifically termed as Peristalsis.
