Which ocean current runs along the western coast of South America producing cold offshore winds?
A. Gulf Stream
B. equatorial countercurrent
C. Humboldt Current
D. west wind drift current
E. east wind drift
Answer: C
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The two amino acids in the accompanying figure both have side groups (R groups) that are ____
a. acidic and polar b. uncharged and nonpolar c. basic and polar d. acidic and nonpolar e. uncharged and polar
Floods are worse after levees are built and wetlands are drained because
A. water moves into rivers more quickly. B. rainfall becomes more intense per unit area. C. the total volume of water increases. D. people complain more about damage. E. All of these are reasons floods are worse after levees are built and wetlands are drained.
Pseudodominance is used to map genes by using what method?
What will be an ideal response?
Lactose is a disaccharide found in milk. What makes some people "lactose intolerant" as adults?
A) Some people don't produce any enzymes, including the one needed to digest lactose. B) Lactose can only be digested by people who produce enough lipase to digest it. C) Lactose-intolerant people don't produce adequate amounts of lactase. D) The active site of the lactose-digesting enzyme can vary from person to person.