As predators feed on prey, prey abundances decrease over time. This is predicted to result in a(n)
A) increase in predator abundance.
B) decrease in predator abundance.
C) no change in predator abundance.
D) increase in predator size.
B
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Although validated susceptibility testing methods do not exist for this group of organisms, in vitro data suggest that certain cephalosporins and aminoglycosides are effective against which one of the following groups of organisms?
a. O. anthropi b. S. putrefaciens c. P. yeei d. R. radiobacter
An incomplete digestive system is seen in:
a. flatworms only b. cnidarians only c. both roundworms and annelids d. both cnidarians and flatworms e. mollusks
A carefully formulated scientific explanation that is based on extensive observations and is in accord with scientific principles is called a
A) control. B) theory. C) fact. D) hypothesis. E) postulate.
Though it is a continuous process, list the five stages of mitosis in the sequence they are described in for convenience, starting with prophase
a. Prophase b. Prometaphase c. Metaphase d. Anaphase e. Telophase