Why do the natural reactions involving ozone not lead to depletion of the ozone layer?
A) Ozone continually rises from the troposphere.
B) Ozone is too diffuse.
C) Ozone breaks into fragments that can reassemble into more ozone.
D) UV radiation generates more ozone.
E) C and D
E
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If a back-arc basin is a region related to a subduction zone, how can such an extensional basin form near a boundary defined by compression?
A) Trench rolls back as the old, dense subducting plate sinks. B) Compression ceases before extension takes over. C) Rising magma is softening the crust, allowing it to stretch. D) A plate subducting at an extremely shallow angle is pushing against the back-arc region.
Cellular respiration is the process by which organisms
A. create complex organic molecules from simple molecules. B. convert heat to chemical bond energy for metabolic work. C. release energy from sugar for metabolic use. D. More than one of these choices are correct
Which processes would change a metamorphic rock to an igneous rock?
A. Melting and crystallization B. Weathering, transport, and lithification C. Increased temperature and pressure
P waves are able to travel through:
a. the mantle b. the outer core c. the inner core d. all of the above