The following are all differences between manatees and dugongs except:
a. fresh and seawater habitat for manatees, dugongs only live in seawater.
b. dugongs have a larger head.
c. dugongs have a shorter flipper.
d. manatees' forelimbs form flippers, dugongs' do not.
D
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Which one of the following is a type of species interaction with impacts that depend on prey density and effectiveness of defenses to determine the short-term impact on the prey population?
A) competition B) consumption C) mutualism D) commensalism
In women, blocked oviducts can result from sexually transmitted diseases
a. True b. False Indicate whether the statement is true or false
Amoebic dysentery is most commonly contracted through
A. contaminated blood products. B. direct transmission from one host to another. C. insect bites. D. puncture wounds. E. the fecal-oral route from contaminated food or water.
Why doesn't the hydrochloric acid produced by the stomach digest its own lining cells?
A) The acid is specific to proteins, not cells. B) The stomach has a dense connective tissue lining. C) Lining cells produce a protective mucus layer. D) The cells make chemicals that quickly neutralize all the acid.