Physical change. Boiling water does not change the fundamental properties of the water, as it can turn back into water during condensation.
there should be an image or something?
In my opinion, <u>natural gas</u> is a source that will be most common in the future. Considering that natural gas is a fossil fuel that is used as a source of energy for heating, cooking, and electricity generation. It is also used in stoves, ovens, clothes dryers, lighting fixtures and other appliances that are used and needed in everyday life. Imagine a life without natural gas. We wouldn't be able to heat our homes, cook our food, etc.
The Chinese. All other cultures most like did not support astronomy.
This short description given clearly describes the Milky Way Galaxy. It is a collection of millions of stars, dusts, and gases that form a halo of hot gas. Some scientists theorized that within this galaxy are thousands of other galaxies that could possibly hold other life forms.
