What is the most effective anti-drag body plan?
a. Torpedolike
b. Horizontally compressed
c. Vertically compressed
d. Disk-shaped
ANS: A
Drag is the resistance to movement and is determined by the frontal area, body contour, and surface
texture. It increases geometrically with increasing speed. Information can be found in the section
Fishes Are Successful Because of Unique Adaptations.
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A good heat conductor is a
A. poor insulator. B. good insulator. C. neither of these D. not enough information
Which gas, contributed in part by burning fossil fuels, is used by scientists as an indicator of future global warming?
A) CO2 B) nitrogen C) oxygen D) hydrogen
Aging populations will present tremendous challenges for poor countries because
A) today the elderly are cared for by their families. B) there are fewer elderly in poor countries. C) of the increase in young people in the population. D) retirees from rich countries may migrate to poor countries.
Which of the following processes can cause land surface uplift (i.e., build mountains)?
a. During collisional orogeny or convergent-margin orogeny, horizontal compression causes the crust to thicken vertically b. Adding igneous rock to the crust (i.e., volcano eruption or magma intrusion) can generate mountains c. Removal of lithospheric mantle from the base of a plate will cause the remaining lithosphere to rise to form mountains d. In rifts, hot asthenosphere rises and heats the lithosphere, resulting in uplift of the lithosphere. e. All of the above