The pupil of your eye is a net
A) absorber of radiant energy.
B) emitter of radiant energy.
A
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The Aleutian Islands are the site of crust formation by a mid-ocean ridge. Indicate whether the statement is true or false
Trilobites, an organism abundant in the Early Paleozoic and less abundant in the Late Paleozoic, greatly flourished after the Permian extinction
Indicate whether the statement is true or false
Which statement is true about continental crust?
A. It is composed of granitic-type rock and has the same density as oceanic crust. B. It is composed of basaltic-type rock and has a lower density than oceanic crust. C. It is composed of basaltic-type rock and has a higher density than oceanic crust. D. It is composed of granitic-type rock and has a lower density than oceanic crust. E. It is composed of granitic-type rock and has a higher density than oceanic crust.
The current total world population is just over ________
A) 5 billion B) 6 billion C) 7 billion D) 8 billion E) 9 billion