Cerebrospinal fluid is found in the space between ____
a. arachnoid and pia maters
b. skull and dura mater
c. pia mater and brain
d. dura and arachnoid maters
e. scalp and skull
ANSWER: a
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Which of the following countries has the
smallest ecological footprint?
a. Mexico b. China c. United States d. India e. Canada
The ________ model of succession proposes that later successional species are neither inhibited nor aided by species of earlier stages
Fill in the blank(s) with correct word
Why are molecular characteristics the choice for modern phylogenetic analysis over morphological traits?
A. I. They generate a shorter tree than the morphological traits B. II. They generate a longer tree than the morphological traits C. III. There are more molecular characters to draw relationships from D. IV.Molecular characters are more objective. E. V.Morphological trees are obsolete F. All of the above G. I, III, IV, V H. III, IV, & V J. III & IV
Transovarian transmission is a process in which
A. a pathogen infects the ovaries of the host. B. a pathogen is transmitted to the host when the host ingests contaminated eggs. C. an infected female vector transmits the pathogen to the eggs forming in its ovaries. D. the pathogen is transmitted from an infected male to a healthy female during mating. E. the pathogen is spread from one host to the next by unprotected sexual intercourse.