What is always a molecule but not always a compound? ("A ___ is always a molecule, but a ___ is not always a compound.") Please help!

"A compound is always a molecule, but a molecule is not always a compound."

Explanation:

All compounds are molecules, but not all molecules are compounds. Hydrogen gas (H2) is a molecule, but not a compound because it is made of only one element. Water (H2O) can be called a molecule or a compound because it is made of hydrogen (H) and oxygen (O) atoms.

its going to be mutualism cuz they both benefit from the relationship.

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