Which of the following is not a component of the cell membrane?
A) phospholipids
B) proteins
C) carbohydrates
D) RNA
D
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In Wegener's time, scientists thought that the occurrence of fossils of the same organism in two different, disconnected continents was proof that ________
A) the weather patterns had changed over time such that some organisms could be blown by the wind from one place to another. B) there were icebergs in the Atlantic Ocean that could carry organisms from Africa to South America C) birds flew between the continents and carried the organisms with them. D) there had once been land bridges separating the continents
Although not the longest river in the world, by volume, more water flows through the Amazon River than any other river in the world
a. True b. False Indicate whether the statement is true or false
Tornadoes contain extreme pressure gradients. They are thought to be on the order of ________ millibars from the outside to the inside of the storm
A) 10 B) 100 C) 1,000 D) 10,000 E) 100,000
Which country is most likely to experience labor shortages in the future?
A. Germany B. The United States C. Italy D. Guatemala