Incoming solar radiation is reflected by water on the

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C. Incoming solar radiation is reflected by water on the surface of organisms D. Evaporation requires energy, and the energy involved is removed from the organism when water vapor is released Reset Selection Mark for Review What's This? Question 4 of 10 4.0 Points A major cost experienced by all organisms that regulate their body temperatures (like us) is: A. They require more food than otherwise similar organisms that do not regulate body temperatures B. They are more visible to predators like rattlesnakes that can sense heat C. It’s hard for them to be comfortable on hot nights D. They cannot be active and seek food when temperatures are well below their body temperature Reset Selection Mark for Review What's This? Question 5 of 10 4.0 Points If ! lxmx (or R) for a particular life table is equal to .8, we know that: Reset Selection Mark for Review What's This? Question 6 of 10 4.0 Points Organisms with life histories that involve very short pre-reproductive periods, many offspring (produced even at a risk to parental survival), and little parental care have very high potential rates of population growth. From this perspective humans seem particularly un-fit. How can life histories with long pre-reproductive periods, few offspring, and lots of parental care persist? Reset Selection Mark for Review What's This?
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4/25/13 3:25 PM 2013 Problem Set 4 Evo Lecture 9 and Eco Lectures 10-12 Page 4 of 5
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