About __________ different languages are spoken in the United States
a. 790
b. 100
c. 380
d. 1000
c
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Animals with a nerve cord along the back and gill slits during some developmental stage are called
a. insects. b. invertebrates. c. chordates. d. metazoans. e. trilobites.
Polygenism asserts that _________
a. all humans share the same origin and vary due to environmental constraints b. human variation is caused by the migration of people over time c. human variation is explained by the origin or creation of groups in different times and places d. social complexity causes human variation
Linguistic nationalism refers to the establishment of a nation where everyone speaks only one language
a. True b. False Indicate whether the statement is true or false
In Mendel's experiments, what was the ratio of tall to short plants in the F2 generation?
a. ?3 to 1 b. ?15 to 1 c. ?½ tall, ½ short d. ?4 to 1 e. ?5 to 1