6. Circle the letter of each sentence that is true about Earth. a. Indirect evidence of Earth's interior comes from studying ro
samples.
b. Geologists cannot observe Earth's interior directly.
c. It is over 6,000 kilometers from the surface to the center of
d. Geologists learn about Earth's interior by drilling holes.

Which of the following crops is not typically grown in the great plains region? a. corn c. soybeans b. rice d. wheat

Use your vocabulary words to complete the sentences below. more of the world's population is now concentrated in heavily populated urban areas known as a this is quite a contrast from the past when or native groups were either farmers or — hunters and gatherers who moved between places in search of food. advanced technology has led to the integration of world economics and cultures, in the world's more developed countries. this integration requires , the responsible use and management of natural resources.

Reading graphs: unemployment us unemployment rate (1961-2011) identify the trends in the graph and then use the drop- down menu to complete each statement from 1961 to 1965 unemployment was in the mid-2000s through 2011. unemployment was percentage unemployed 1961 1971 1981 1991 2001 2011 year