Base your answers to questions 80 through 82 on the generalized cross section of the grand canyon
represented below and on your knowledge of earth science. some rock layers have been labeled. the rock layers
have not been overturned.

state the approximate age of the redwall limestone, in million years. [1]

The 5th term in a series of even number that begin 3x

What can happen to solar radiation when it enters earth’s atmosphere? check all that apply. it is absorbed by earth. it is reflected by clouds. it is reflected by glacial ice. it is condensed into visible light. it is amplified by water molecules.

Which of the following statements does not describe shi huangdi? a. shi huangdi was the first emperor of the qin dynasty. b. shihuangdi wrote the lunyu, the most important text in confucianism. c. shihuangdi conquered city-states to unite china. d. shihuangdi began the process of building the great wall of china.