Which best contrasts sublimation and vaporization

An object's buoyant force and weight mean the same thing. a. trueb. false

What are two different ways you could find the value of a? explain these methods.

Avolcano erupts next to a grassland area in a valley. a. describe three ways in which material released by the volcano could impact the grassland area. b. describe three ways in which the grassland ecosystem could recover after a volcanic eruption.