Which factors besides sunlight influence the rate of primary productivity?
a. temperature and total number of organisms
b. photosynthesis and availability of nutrients
c. temperature and availability of water
d. photosynthesis and availability of water
e. temperature and photosynthesis
ANSWER: c
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Tooth morphology is not related to diet
a. True b. False
Communities with low evenness will have rank-abundance curves
A) that are very steep. B) that are 1:1. C) that are very shallow. D) that are flat.
Fungi may be differentiated from plants because fungi are:a
photosynthetic. b. all macroscopic. c. all multicellular. d. heterotrophic. e. all prokaryotic
Two diseases that represent high-priority threats as biological weapons today are
A) smallpox and typhus. B) syphilis and HIV. C) anthrax and botulinum. D) anthrax and Salmonella.