An organism that has behavioral strategies to manage the gain of heat from and the loss of heat to the environment, but lacks a physiological temperature-regulating mechanism, is termed a(n)
A. homotherm.
B. endotherm.
C. positherm.
D. ectotherm.
E. thermophile.
D. ectotherm.
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The number-one risk factor for sudden infant death syndrome (SIDS) is ____
a. an infant lying on their back b. breast feeding an infant c. premature feeding of solid foods d. exposure to tobacco smoke e. holding the infant
Which of the following is NOT a correct match?
a. hydrosphere; ice caps b. lithosphere; airborne particles c. atmosphere; gases d. hydrosphere; rivers e. lithosphere; Earth’s crust
Which of the following best describes the pattern of microbial death?
A) The cells in a population die at a constant rate. B) All the cells in a culture die at once. C) Not all of the cells in a culture are killed. D) The pattern varies depending on the antimicrobial agent. E) The pattern varies depending on the species.
The Morphological Species Concept:
a) was developed early and still has major support. b) almost always incorrectly classified species due to homoplasies. c) is still the most accurate species concept in use. d) groups species based on how they have changed through time. e) groups species based on similar phenotype.