Does any have a Chapter 18 Tangled Threads summary I can use?

Select the correct answer from each drop down menu. among these figures figure and blank have the same volume. 1 a c e 2 b d

Gemstones are commonly found in pegmatites, which are igneous rocks that are a. exceptionally mafic b. exceptionally coarse grained c. exceptionally fine grained d. extrusive, forming from lava

The layers of earth are based on what two sets of characteristics?