Which of the following is considered to be the main feature of civilization? A Domestication of animals
B Settled farming
C The use of simple tools
D The establishment of cities

Nwhich situations is the principle of cross-cutting relationships useful in determining relative age? check all that apply. a fault breaks through sedimentary layers. sedimentary layers form and then are tilted. igneous rock forms between sedimentary layers. sedimentary layers form over millions of years in a lake bottom. lava flows form on top of one another from several eruptions over time.