The (body louse/cat flea/dog tick) is the primary vector of epidemic typhus
What will be an ideal response?
body louse
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A fever augments the host's defenses by
A. enhancing microbiostasis. B. enhancing the activity of the immune system. C. stimulating leukocytes into action. D. All of the choices are correct.
For which two species concepts are anatomical features the primary criterion for determining species identities?
1. biological 2. ecological 3. morphological 4. phylogenetic 5. paleontological A) 1 and 2 B) 1 and 3 C) 2 and 3 D) 3 and 5 E) 4 and 5
Which element is most likely to accept an electron from another atom?
a. chlorine (7 valence electrons) b. calcium (2 valence electrons) c. neon (8 valence electrons)
d. carbon (4 valence electrons) e. potassium (1 valence electron)
The prime culprit that produces coral bleaching
is
a. fungal infections. b. water levels changing. c. salinity levels changing. d. light levels changing. e. temperature changes