Being frozen, staying a liquid, becoming ice, and becoming a gas (steam)
Answer:
Hydrogen bonding, interaction involving a hydrogen atom located between a pair of other atoms having a high affinity for electrons; such a bond is weaker than an ionic bond or covalent bond but stronger than van der Waals forces. Hydrogen bonds can exist between atoms in different molecules or in parts of the same molecule.
Explanation:
An organ.....................................................................................................
homo sapiens leave africa at approximately 200,000 years ago.
