The synthesis of unsaturated fatty acids from fatty acids is which type of reaction?
A) condensation
B) hydrolysis
C) oxidation
D) reduction
C
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What is the purpose of marine protected areas?
A) to reduce erosion of the seafloor B) to provide safe havens for marine life C) to shield the shoreline from crashing waves D) to designate zones for recreation and tourism
What is the currency of the European Monetary Union?
A) the euro B) the franc C) the Deutschemark D) the pound E) the dollar
Notice the part of this image labeled "continued trench rollback." What is happening in "trench rollback"?
A) Old, dense lithosphere sinks, creating slab suction that pulls the upper plate toward the trench. B) Continued tension on the plate results in rifting, dropping blocks of continental crust. C) The trench gets deeper as the descending plate locks against the overriding plate and pulls it down. D) Rising magma plutons melt the base of the lithosphere to create a depression.
Why is infinite population growth not possible?
A. Water supplies are stretched to the limit in many places. B. Topsoils are being lost at an alarming rate. C. Supplies of crude oil and gas are in decline. D. All of these choices are correct.