You've made the hypothesis that the higher the density of a rock, the higher the temperature at which will melt, because a denser rock contains more material. what should the independent variable be in an experiment testing this hypothesis? a. the size of the rock b. the color of the rock c. the density of the rock d. the temperature at which the rock melts

a plasma is a warm ionized gasoline consisting of approximately equal numbers of definitely charged ions and negatively charged electrons. the characteristics of plasmas are notably unique from the ones of ordinary neutral gases in order that plasmas are considered a awesome "fourth kingdom of remember."

clouds form

solid ice forms on leaves.

water droplets form on grass.