Two boys survived 6 days at sea without drinking any fresh water. Their plasma antidiuretic hormone (ADH) levels should be ________
a. about the same as normal
b. higher than normal
c. zero after 6 days
d. lower than normal
b
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The half-life of carbon-14 is 5,600 years. A fossil that has one-eighth the normal proportion of carbon-14 to carbon-12 is probably
A. 2,800 years old. B. 5,600 years old. C. 11,200 years old. D. 16,800 years old. E. 22,400 years old. Clarify Question What is the key concept addressed by the question? What type of thinking is required? Gather Content What do you already know about half-lives of radioactive isotopes? What other information is related to the question? Choose Answer Given what you now know, what information is most likely to produce the correct answer? Reflect on Process Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Chemical elements other than carbon, hydrogen, oxygen, and nitrogen that are required in the diet and must be obtained from the food an animal eats are otherwise known as ____
Fill in the blank with the appropriate word.
Which of the following is an example of the second law of thermodynamics?
a. Conversion of the energy in sunlight into glucose b. The use of gasoline to propel your car c. ATP activation of a proton pump. d. A light bulb heats up after use e. A nuclear reactor lights up the city.
Which of the following is NOT an important social skill that can help you cope with stress?
A. The ability to control a conversation B. Knowledge of appropriate social behavior C. A repertoire of conversation-starters D. An ability to express what you are thinking