Which factor is density-dependent?
A) decrease in temperature
B) increase in waste production
C) decrease in frequency of hurricanes
D) increase in rainfall
B
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Which organisms cause “red tides?”
(a) bacteria. (b) cyanobacteria. (c) euglenoids. (d) dinoflagellates.
A bacterium that uses the oxidation of inorganic compounds to provide energy for manufacturing nutritious organic
compounds is a: a. parasite. b. pathogen. c. saprotroph. d. chemoautotroph. e. photoautotroph.
In humans, the term embryo refers to the following period of time: ____.
A. from the ninth week after fertilization until birth B. from the eighth week after fertilization until birth C. from fertilization until the ninth week after fertilization D. from 2 to 10 weeks after fertilization E. from 2 to 8 weeks after fertilization
Why might the xiphoid process be missing from the sternum in a set of human remains?
What will be an ideal response?