Which of these countries has the highest per capita water footprint?
A. U.S.
B. Russia
C. China
D. Canada
Answer: A
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Predator-prey relationships are beneficial at the ____ level, but harmful at the ____ level.
A. individual; population B. population; individual C. individual; species D. individual; landscape E. landscape; species
The Green Revolution innovations in agriculture are based on a package of inputs including all of the following except
A) high yielding seed varieties. B) synthetic fertilizers. C) chemical pesticides. D) irrigation. E) natural fertilizers (compost, green manure, animal manure).
What type of information can scientists derive from observing deep-ocean cores?
A) how much light penetrates the ocean B) information about historical changes in Earth's climate C) historical changes in tidal cycles D) direct measurements of salinity over time
Evidence supporting the theory of continental drift includes ________.
A. the presence of similar glacial patterns across oceanic basins B. the fit of continental margins on opposite sides of the Atlantic Ocean C. the presence of similar mountain belts along continental margins across oceanic basins D. the distribution of fossil organisms E. All of these are correct.