A chemical compound is a chemical substance composed of many identical molecules (or molecular entities) composed of atoms from more than one element held together by chemical bonds. A molecule consisting of atoms of only one element is therefore not a compound.
A compound is a substance that is a composed of two or more different kinds of molecules. Compounds are held together by chemical bonds.A molecule is a group of atoms held together by covalent bonding that acts as an independent unit
Well this all depends on the region you would like to know about. One biome would be The Tundra. This biome is a very bitter cold. Some times the temperature can drop to -45f! So your answer more than likely would be Tundra. Have a wonderful day user!