All compounds are molecules but not all molecules are compounds. explain this statement.

All compounds are molecules because a molecule is 2 or more substances/elements combined and a compound is 2 or more elements combined. But not all molecules are elements because some molecules are just combined substances with no elements combined at all.

Ithink it is quantity of plants

Iwould you figure it out but you don't have a picture or in your question as to what the physical property you're looking for is