On this phylogeny of Theridiidae spiders, shaded names indicate group-living species. Group living in this family has evolved:
a. once. c. nine times.
b. three times. d. twelve times.
C
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Which of the following is normally treated by antifungal creams and solutions?
A. Subcutaneous mycoses B. Systemic mycoses C. Superficial mycoses D. Intramuscular mycoses
The ability of some organisms to alter their membrane lipid composition in response to temperature is known as ________.
Fill in the blank(s) with the appropriate word(s).
Adaptive radiation is NOT accompanied by:
a. migration to an island. b. a mass extinction. c. a devastating event, such as a volcanic eruption. d. climatic change. e. sympatric speciation
Carbon dioxide is transported in human blood primary in which of the following ways?
A. As oxyhemoglobin B. As bicarbonate ions C. Attached to plasma proteins D. Attached to the amino groups of hemoglobin E. Attached to the heme groups of hemoglobin