Once they are a year old, many small songbirds such as goldfinches and house finches have approximately a 50% probability of surviving to the following year, regardless of the bird's age
Which survivorship curve in the figure best represents such birds?
A) Line A B) Line B C) Line C D) None of the above
B
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Which of the following is typically erupted from a volcano?
A) Scalding hot ash, lava, and gases B) Ice and snow, combined with steam C) Large quantities of liquid water
Individuals in Africa often share crop and livestock land with other families in their community. What happens to the land as a result of each family using an individual's approach to managing it?
A) It is preserved from family to family and generation to generation. B) It is managed sustainably for future farming. C) It is preserved as a result of the importance of cultural heritage. D) It is often overexploited. E) It is protected by laws.
What hydrologic cycle factor is most responsible for salinity values found near the tropics?
A. Infiltration B. Evaporation C. Precipitation D. Transpiration E. Runoff
In which of these settings would a river or lake lose water to groundwater?
A. where a lake is directly underlain by an impermeable layer B. where the water table adjacent to the river is higher than the river C. where a river flows across an area where the water table is beneath the surface D. None of these choices are correct.