Which of earth's layers is formed by volcanic activity?
a. mantle
b. inner...
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Creation of an unnaturally uniform sample to represent a diverse populationcan be avoided by: a. including only willing b. asking another scientist for .c. choosing only identical participants.d. selecting individuals at random.
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Which best describes the digestive system of arthropods? a incomplete, two openings b complete, one opening c two-way, one opening d one-way, two openings
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What is the approximate time of death of the body temperature is 29.4 degrees celsius
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