A hormone-disrupting chemical often found in water bottles and baby bottles that interferes with the human reproductive process is the chemical __________
Fill in the blank(s) with correct word
BPA (bisphenol-A)
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The key early domesticates at Ban-po-ts'un were:
A. corn and guinea pigs. B. grapes and cattle. C. millet and pigs. D. wheat and goats.
The Aymara Indians, who live in the mountains of Bolivia, have become biologically adapted to their environment by being:
a. short legged and barrel chested and surviving on lower oxygen content. b. long legged and extremely thin in comparison to the rest of the nation. c. short legged and very narrow chested and surviving on higher oxygen content. d. excellent climbers with an extraordinary sense of balance. e. long legged and stocky chested because of enlarged heart and lungs.
Which statement about the Olmec is FALSE?
A. The Olmec carved massive stone heads. B. The Olmec lived along the Gulf Coast of modern Mexico. C. The Olmec were the first Mesoamerican empire. D. The Olmec built earthen mounds grouped around plazas. E. The Olmec lived between 3,200 and 2,500 years ago.
The Pleistocene was:
A. the time of the only ice ages in earth's history B. a time with both glacial and interglacial periods C. a time when ice covered the entire earth D. the time of the only ice ages in earth's history and a time with both glacial and interglacial periods