The molecular mass of a substance is defined as the mass of
how many molecules of the substance?

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

~batmans wife dun dun

shield volcanos are angry and get mad over the smallest things so much that there heads erupt   pahoehoe and a'a lava. a composite volcano is the poller opposite of a shield volcano. its   peaceful thing and knows how to control its emotions.