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]

Write a short paragraph of about 150-300 words. explain how the physical environment can limit human activities.

Why have the countries of the region had difficulty establishing democratic governments in recent years? choose all answers that are correct b is also correct i need to know if theres any morecommunists have overtaken the countries of the caucasus region. the soviets established national borders in the region without considering the location of ethnic groups. fighting continues between armenia and azerbaijan over the nagorno-karabakh region. civil war between communists and islamic groups in tajikistan resulted in thousands of deaths and refugees are forced to flee. in a test!

From the standpoint of geography, a is an internal rendering of an individual's known world