Which of these passages would most likely be part of an expository text?
what makes weather? earth's temperature is partly responsible. water vapor in the air moves from one place to another depending on temperature. warm air rises, and cold air sinks. as the warm air around the equator rises, it moves toward the poles and is cooled. the cold air around the poles also moves toward the equator. while this is happening, earth is spinning. the spin of the planet is called its rotation. the rotation of earth is also important to weather. as earth spins, the sun can warm only part of it at any one time. the other part faces away from the sun. it is cooler. as a result, the rotation of earth creates constantly changing temperatures.