Who proposed the idea that continents drift?
A. Einstein
B. Wegener
C. Newton
Answer: B
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What property of metal atoms account for many of the observed bulk phenomena seen in metal samples?
A. Metal atoms easily lose one or more outer electrons. B. Metal atoms easily gain one or more outer electrons. C. Metals readily form covalent bonds. D. Metals readily form ionic bonds. E. none of the above
Ice is effective at cooling drinks because of the ____
a. sensible heat loss of water b. heat capacity of water c. latent heat of fusion d. diffusion of heat energy e. latent heat of vaporization
Light is a form of ________radiation
A) UV B) X-ray C) electromagnetic D) gamma E) infrared
What is the function of secondary messengers such as prostaglandins?
A) carry a message from one part of a cell to another part of the cell B) deliver signals from one part of the body to another C) mediate hormonal responses D) none of these