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

Biology & Microbiology

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Teeth are located in sockets in the jaws; these sockets are lined by a(n) ________ membrane

Fill in the blank(s) with correct word

Biology & Microbiology

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

Biology & Microbiology

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.

Biology & Microbiology

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

Biology & Microbiology