Which of the following species is credited with being the first to use stone tools?

a) Homo sapiens
b) Homo erectus
c) Homo habilis
d) Cro-Magnon
e) Australopithecus afarensis


Answer: c) Homo habilis

Biology & Microbiology

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A. true B. false

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Explain what genetic ‘trick’ could have confounded Mendel is his recognition of segregation? What will be an ideal response?

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In commercial food manufacturing, what is the purpose of hydrogenation?

A) to make an unsaturated fat more saturated B) to reduce the amount of "empty calories" in a carbohydrate C) to convert fatty acids into amino acids D) to convert vitamins into minerals

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The membranes that line the thoracic and abdominopelvic cavities and most of the internal organs are referred to as _____.

Fill in the blank(s) with the appropriate word(s).

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