Ocean crust is denser than continental crust because ocean crust is ________
A) composed primarily of granite B) thicker than continental crust
C) thinner than continental crust D) composed primarily of basalt
D
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Hox genes ____
A)control the formation of shells B)control the development of individual body regions C)mostly evolved after the Cambrian explosion D)guide the formation of exoskeletons E)evolved before the Cambrian explosion
Remote sensing is the collection of information and data about distant objects or environments
a. True b. False Indicate whether the statement is true or false
Read the following excerpt from The Works of John Playfair (1822). What glacial landform is being described?
"…For the moving of large masses of rock, the most powerful engines without doubt that nature employs are the glaciers….[Rock] fragments they gradually transport to their utmost boundaries, where a formidable wall ascertains the magnitude, and attests the force, of the great engine by which it was erected." A) Arête B) Drumlin C) Horn D) Moraine
Oxidation of aluminum causes which of the following colors on the surfaces of rocks?
A) Light purple B) Grayish-blue C) Lime green D) Black E) Reddish brown