The Intergovernmental Panel on Climate Change reported in 2007 that atmospheric carbon dioxide levels will nearly double by the end of this century. If this happens, what will be the atmospheric concentration of carbon dioxide?
A. 2.0 ppm
B. 3.5 ppm
C. 385 ppm
D. 560 ppm
E. 700 ppm
E. 700 ppm
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Which of the following macronutrients is rarely deficient?
a. Carbon b. Hydrogen c. Oxygen d. Zinc e. Carbon Dioxide
Within a community; a dominant species may appropriate a disproportionate share of available
resources, thus __________ other species. a. increasing competition with b. increasing disease transmission with c. undergrazing d. outcompeting e. decreasing disease transmission
Which of the following is an underwater opening from which mineral-rich water heated by geothermal energy streams out?
A. Hydrothermal vent B. Iron–sulfur plume C. Geothermal geysers D. Continental shelf E. Undersea volcano
When the concentration of a ligand is equal to the KD which of the following is true?
A. All of the ligands are bound to receptors. B. All of the receptors are bound to ligands. C. Half of the receptors are bound to ligands. D. Half of the ligands are bound to receptors. E. All of the ligands and receptors are bound to each other.