Ageologist finds a mineral sample alongside a swift-flowing river. she determines that the mineral is a type of courts. which is true about this mineral?
a: it can be classified as a carbonate.
b: it can not be classified without knowing its end use.
c: it can be classified as a silicate mineral.
d: it can be classified as a metallic ore.

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 is the process that powers plate tectonics

Can you give an explanation of what medc and ledc are.