In a series of field experiments, David Tilman and colleagues investigated biodiversity and ecosystem function. They found a relationship between
A. ecosystem diversity and species richness.
B. ecosystem function and genetic diversity.
C. species diversity and genetic diversity.
D. species diversity and ecosystem function.
D. species diversity and ecosystem function.
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The process of evolutionary changes that result in formation of new species and groups of species is called
A. temporal evolution. B. artificial selection. C. macroevolution. D. serial evolution. E. a combination of temporal and serial evolution.
The myofibrils consist of both thin filaments made of actin and thick filaments composed of
A. tropomyosin. B. myosin. C. acetylcholine. D. troponin. E. chitin.
"Rapture of the deep" is characterized by ____.
A. increased O2 in the blood B. altitude sickness C. excess CO2 in the blood D. excess CO in the blood E. euphoria
Pneumocystis pneumonia in an AIDS patient would be considered a:
a. communicable disease b. secondary disease c. genetic disease d. primary infection