We lose 5 to 7 million hectares of productive cropland per year to ________
A) abandonment, feralization, and other factors
B) forest replanting and regeneration
C) recreational land use
D) soil degradation
E) soil conservation efforts
Answer: D
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A great tool for visualizing and comparing a population's age and sex composition is:
A. population pyramids. B. demographic transition model. C. doubling time. D. the demographic equation.
Martin Luther translated the Bible into
A) English. B) German. C) Spanish. D) French.
Feeding America programs in the United States represent
A) a personal level safety net. B) a family level safety net. C) a national level safety net. D) a global level safety net.
What has happened to average global temperatures over the last 100 years?
A. Decreased about 0.5°C B. Increased about 0.5°C C. Remained essentially constant