Which of the following is not a harmful practice of modern farming?
A. polyculture planting
B. heavy use of fertilizers
C. heavy use of pesticides and herbicides
D. increased fuel consumption
E. generous irrigation
Answer: A
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Which of the following organisms produces the toxin associated with St. Anthony's Fire (ergotism)?
A. Aspergillus nidulans B. Stachybotrys chartarum C. Amanita phalloides D. Claviceps purpurea
For living organisms, which of the following is an important consequence of the first law of thermodynamics?
A) The energy content of an organism is constant. B) The organism ultimately must obtain all of the necessary energy for life from its environment. C) The entropy of an organism decreases with time as the organism grows in complexity. D) Organisms grow by converting energy into organic matter. E) Life does not obey the first law of thermodynamics.
One of the strongest lines of evidence of a meteor or comet impact in the late Cretaceous is
A) the extinction of the dinosaurs in only South America. B) a thin layer of potassium-40 in late Cretaceous fossil strata. C) a thin layer of iridium-enriched clay in late Cretaceous fossil strata. D) the warming of Earth's climate in the late Cretaceous.