Which of the following lipids lower blood pressure?
A) arachidonic acid
B) leukotrienes
C) prostaglandins
D) thromboxanes
C
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Which of the following processes produce sedimentary clasts?
A) Fracturing of bedrock that results in angular pieces B) Breaking of round cobbles as they are transported C) Scouring and abrasion of bedrock along rivers D) Decomposition of granite into quartz grains and clay E) All of these are correct.
Light and variable winds—which caused difficulties for mariners in the days of sailing ships—occur under the
A) subpolar low and equatorial low. B) subpolar low and subtropical high. C) equatorial low and subtropical high. D) equatorial low and subpolar low.
International trade in services
A) is less profitable than trade in goods. B) is more profitable than trade in goods. C) has not yet become feasible. D) demonstrates the same trends as trade in goods.
The oldest sediments in the ocean basins are found:
1.on the mid-ocean ridges.
2.on the hotspots.
3.near the subduction zones.
4.on the transform faults.