Linguists estimate today that there are approximately how many human languages?
a. 56
b. 800
c. 12,000
d. 6,000
d
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Which of the following statements is not correct? a. The invention of electrical generators and the incandescent light bulb occurred in the mid-1800s. b. Major innovations in telecommunications occurred in the 20th century
c. The introduction of gasoline-fueled internal combustion engines occurred in the 1840s. d. The discovery of nuclear fission occurred in the late 1930s.
Religion prevents people from expressing their common identity in ways that would create powerful social bonds
a. True b. False
Parallel cousins are first cousins that are born in the same year
a. True b. False Indicate whether the statement is true or false
Recent studies show that DDT is harmless for bird species
Indicate whether the statement is true or false