Which line in the figure represents the survivorship curve for humans?
A) Line A B) Line B C) Line C D) None of the above
C
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If an air parcel is given a small push upward and it falls back to its original position, the atmosphere is said to be ____
A) stable B) unstable C) isothermal D) adiabatic
Coal, natural gas, and oil are not considered renewable sources of biomass energy because they
A) were produced by photosynthesis. B) release carbon dioxide when burned. C) contribute to ozone destruction. D) were formed millions of years ago.
The presence of a breakwater can promote several actions along a shoreline. However, which one of the following would not result because of the presence of a breakwater?
A) Storm waves breaking on the seaward side of the structure. B) Increased beach erosion on either side of the breakwater. C) Quiet water on the landward side of the breakwater, resulting in deposition. D) Increase of rip currents and longshore currents because of interference from the structure.
In what continent would you find a polar desert?
A. Africa B. South America C. Australia D. Antarctica