The high heat of vaporization of water helps you to feel cooler when you sweat because the transition of water from a liquid to a gas requires a ________ of energy to break hydrogen bonds. The energy is ________ from heat produced by your body, thus helping to lower the surface temperature of your body.

A. release; obtained
B. input; released
C. input; obtained
D. release; released


Answer: C

Biology & Microbiology

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A. true B. false

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A lawsuit, filed in 2009, challenged the idea that genes can be ____________________

Fill in the blank(s) with correct word

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In Endler's (1980) studies, the evolution of male guppy coloration is affected by predation and sexual selection. What effect on brightness do the two forces have?

A. Predation: increases; Sexual selection: decreases B. Predation: decreases; Sexual selection: increases C. Predation: decreases; Sexual selection: decreases D. Predation: increases; Sexual selection: increases

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Which of the following pairs is mismatched?

A) dissimilatory sulfate-reducing bacteria — produce H2S B) archaea — extremophiles C) chemoautotrophic bacteria — fix atmospheric nitrogen D) actinomycetes — reproduce by fragmentation E) Cytophaga — a gliding, nonfruiting bacterium

Biology & Microbiology