Human hunting during the Late Pleistocene may have caused the extinction of some large mammals
a. True
b. False
True
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How much have humans increased the annual extinction rate compared to the background rate before modern humans appeared?
A. 1000 times B. 10 times C. No change D. Doubled it
Areas between 25° to 35° latitude usually become ________ because this area is dominated by air that is sinking and being ________
A) deserts; cooled by expansion B) deserts; heated by compression C) rain forests; cooled by expansion D) rain forests; heated by compression
Most Earth subsystems are open systems
a. True b. False Indicate whether the statement is true or false
What term is used to define money that is sent back to Latin America and the Caribbean from people working temporarily or permanently in other countries?
A) braceros B) caceros C) work fund D) remittances E) none of the above