Use the accompanying figure to summarize the key concepts relating to species richness from studies of birds in the South Pacific islands. Each dot in the figure represents an island. What will be an ideal response?
1. The percentage of birds on each island is related to the distance from New Guinea.
2. Species richness declines as the distance from New Guinea (or a mainland/large island)
increases.
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ADH alters reabsorption in target cells by affecting
a. countercurrent flow in the loop of Henle. b. active transport mechanisms involving chloride ions. c. self-assembly of aquaporin subunits. d. thirst-center osmoreceptors. e. cerebral cortex signals that stimulate fluid intake.
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Examine the figure above. What type of pattern did the human population exhibit through most of its history (prior to the 1700s)?
A. zero growth (equilibrium) B. negative growth C. exponential growth D. logistic growth
Viruses are not included in the taxonomic scheme proposed by Carl Woese because they lack
A) genetic material. B) ribosomal RNA. C) proteins. D) lipid membranes. E) cytoplasm.
Which types of blood cells are responsible for transporting oxygen?
A. leukocytes B. thrombocytes C. plasma D. red blood cells E. platelets