Use the drop-down menus to answer each question about rock formation. Which type of rock is formed from molten materials? Which type of rock needs weathering or erosion to form?

What is the result of the greenhouse effect? a. heat is deflected from the atmosphere. b. heat is released from the atmosphere. c. heat is kept in the atmosphere. d. plants are able to grow in the tropics where the air is the heaviest.

In the von thunen model of agricultural land use, what is produced closest to the city epicenter? a. dairy, vegetables, and fruits b. field crops, such as corn and wheat c. beef and other animal products d. wood and lumber

Explain how earths tilt and revolution around the sun affects weather and climate