What causes the seasonal temperature changes on Earth? A. the distance the Earth is to the Sun
B. the revolution of the Earth
C. the tilt of the Earth on its axis combined with its revolution around the Sun
D. the rotation of the Earth

Using complete sentences, explain the differences between a command economy and a market economy. what type of economic system is created when these two systems are combined? what are the benefits of combining these two systems?

Which measure of humidity, relative humidity or dew point, best describes the actual quantity of water vapor in a mass of air

All of the following are reasons why deserts extremely susceptible to wind erosion except a. they lack major root systems b. they contain thin, dry soil c. they have very few plants and trees d. they are extremely hot and lack water