Which continent faces losing the largest percentage of its indigenous languages?
A North America
B South America
C Australia
D Asia
E Europe
C
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Infanticide by adult males
a. is rare in primates b. appears to serve no function c. is performed as a means of population control d. is not resisted by females, including the mother e. has been reported for a number of primate species
Among bonobos, male and female bonds
a. can result in mating, even when the female is not in estrus. b. never result in mating unless a female is in estrus. c. are not very common due to high rates of aggression. d. tend to increase tension and violence in the group. e. tend to increase the threat of predators.
The expression of polygenic traits is:
a. never determined by the influence of environmental factors. b. determined by genes at several loci c. determined by multiple genes at one locus. d. determined solely by the influence of environmental factors.
How many orders of placental mammals are there today?
A. 0 (They are all extinct.) B. 11 C. 19 D. 24