Asubstance changes from a liquid to a gas during evaporation because a. energy is released. b. energy is absorbed. c. energy is lost. d. energy is created.

If the force on an object is in the negative direction, the work it does on the object must be [2 points a) negative. b) positive c) the work could be either positive or negative, depending on the direction the object moves

True or false graphs must include scales that increase by the same amount

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.