The immediate cause of most extinctions is
A) hybridization.
B) wide distribution.
C) environmental change.
D) overspecialization.
E) genetic drift.
C
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Entisols are immature soils associated with recently deposited sediments
Indicate whether the statement is true or false
The most important chromosomal mutations are those that affect the:
A. centromere. B. telomere. C. long arm. D. short arm. E. none of these
The numerous thin filaments that make up the body of a multicellular fungus are the:
A. hyphae. B. mycelia. C. fruiting bodies. D. spores. E. rhizoids.
CO2 is transported in the blood in which of the following?
a. dissolved in the plasma exclusively. b. as bicarbonate ions exclusively. c. bound to hemoglobin exclusively. d. dissolved in the red blood cells exclusively. e. dissolved in the plasma, as bicarbonate ions and bound to hemoglobin.