4. when a substance changes from a solid to a liquid, blank
occurs.

Most energy in an ecosystem comes originally from_

An inclined plane wrapped around a metal shaft is a a. lever b. screw c. pulley d. wedge

In a stagnant pool of water, a crayfish may spend much of its time lying with one side of its carapace near the surface of the water. in this position, it will move the walking legs on that side in a rhythmic back-and-forth motion. explain the likely function of this behavior.