Its a it is a vertical plank of wood you might have on your fence
Answer:
In its stable molecular form, oxygen exists as two atoms and is written O2. to distinguish it from an atom of oxygen O, or ozone, a molecule of three oxygen atoms, O3. Even though each of these is all oxygen, combining atoms of the same element may give very different properties to the molecule.
Explanation:
Answer:
Champollion and others used Coptic and other languages to help them work out other words, but the Rosetta Stone was the key to hieroglyphic. This picture shows us how Champollion worked out what all the hieroglyphs in the two names were. This made it a lot easier to read other Egyptian words now.
Explanation:
I learned this last year
