Which of the following statements is true? a) Sedimentary rocks form from weathered rock and other particles. b) During the rock cycle, igneous rock is weathered into metamorphic rock. c) Minerals with cubed crystals belong to the orthorhombic crystal system. d) Natural gas is formed from inorganic material.

Why would the crystals in an intrusive igneous rock be larger than the crystals in a chemical sedimentary rock? a. intrusive rocks form beneath the earth's surface, so they cool very slowly, which produces larger crystals. b. chemical sedimentary rocks form from dissolved substances on the earth's surface with very high heat and cool very slowly, which produces smaller crystals. c. chemical sedimentary rocks and intrusive rocks have crystals of the same size. o d. chemical sedimentary rocks form deep in the earth, so they cool slower, which produces small crystals. € read question correct:

What's erosion? a. the breakdown of rock into smaller pieces b. the removal of weathered products from rock c. a change in rock resulting from exposure to water d. a chemical change in rock that weakens it

Which of the following terms describes the layers of air surrounding the earth ?