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Which of these serves as a reference for comparison during a scientific investigation? a)outcome variable (dependent variable) b) test variable (independent variable) c)control group d)hypothesis
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Which statement describes an endocrine function rather than an exocrine function? a. salivary glands release saliva into the mouth. b. sweat glands release sweat onto the skin c. the pineal gland releases melatonin into the blood. d. esophageal glands release mucus into the esophagus.
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Explain how scientists use geologic time to determine the age of landforms.
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Biology, 22.06.2019 07:30
Ture or false evidence for evolution includes millions of fossils
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