What is the estimated average ecological footprint of humanity?
A. 6 acres per person
B. 6000 acres per person
C. 600 acres per person
D. 60 acres per person
Answer: A
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Which of the following will have the highest boiling point?
A) CH2CH2CH2OH B) HOCH2CH2OH C) NH2CH2CH2OH D) NH2CH2CH2NH2
The white granite of the Idaho Batholith near Boise, Idaho, contains dark gray xenoliths of metamorphic material. Which is older? How do you know?
A) Granite; the principle of superposition B) Xenoliths; the principle of cross-cutting relations C) Granite; the principle of unconformities D) Xenoliths; the principle of inclusions
How might global climate change cause an increase in cases of malaria?
A) Humans will migrate to cooler areas, spreading malaria to cooler areas of the globe. B) Malaria is transmitted via human wastes, and it is more difficult to process human wastes in hot, dry environments. C) Temperature increases may improve breeding conditions for disease-carrying mosquitoes. D) Warmer temperatures will suppress human immune systems, so humans will be more susceptible to malaria.
The American Forestry Association suggests that each person plant one tree per year in order to compensate for tree loss in urban areas.
Answer the following statement true (T) or false (F)