A constant rate of background extinctions during the late Devonian had a strong impact on the course of evolution of life on earth.
a. true
b. false
Ans: b. false
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Which of the following is not a characteristic of a transformed cell?
A. Alterations in chromosomes B. Decreased growth rate C. Changes in cell surface molecules D. Viral nucleic acid integrated into host DNA E. Capacity to divide indefinitely
Teeth are located in sockets in the jaws; these sockets are lined by a(n) ________ membrane
Fill in the blank(s) with correct word
The tetrapods include:a
fish, amphibians, reptiles, and mammals. b. lancelets, cartilaginous, and bony fish. c. amphibians and reptiles. d. amphibians, reptiles, birds, and mammals. e. echinoderms and chordates
Shrinking the Wealth Gap by taxing the very wealthy to provide more social services to the needy would be considered an application of the _____________ approach to human population growth.
A. neo-Malthusian B. neo-Marxist C. pronatalist D. All of the above are correct. E. None of the above are correct.