The breast consists of about 15 or 20 clusters of _____, each with a separate opening to the nipple.
A. areolas
B. mammary glands
C. oviducts
D. fimbriae
B. mammary glands
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The first epidemiologist was ________.
A. Robert Koch B. John Snow C. Louis Pasteur D. Edward Jenner
The relationship between global warming and greenhouse gases is ___
a. the more greenhouses gases, the less heat is trapped from earth's surface b. the two are unrelated c. the more methane, the less heat is trapped from Earth's surface d. the more oxygen, the less heat is trapped from Earth's surface e. the more greenhouse gases, the greater amount of heat trapped from Earth's surface
The earliest vertebrates lacked
A) a notochord. B) gills. C) brains. D) jaws. E) skeletons.
The end products of the citric acid cycle include all of the following except
A) CO2. B) pyruvate. C) ATP. D) FADH2.