Biology, 04.09.2019 08:10 ciaraCochran1876
in 1887 a strange nerve disease attacked the people in the dutch east indies. the disease was beriberi. symptoms of the disease included weakness and loss of appetite, victims often died of heart failure. scientists thought the disease might be caused by bacteria. they injected chickens with bacteria from the blood of patients with beriberi. the injected chickens became sick. however, so did a group of chickens that were not injected with bacteria. one of the scientists, dr. eijkman, noticed something. before the experiment, all the chickens had eaten whole-grain rice, but during the experiment, the chickens were fed polished rice. dr. eijkman researched this interesting case. he found that polished rice lacked thiamine, a vitamin necessary for good health. what was the problem? type your response here (in complete sentences)
Answers: 3
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Growth of chest hair, deepening of the voice, and muscle growth are secondary sex characteristics. which most likely affects the development of these traits? testes ovaries prostate gland vulva
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Which of the following observation darwin shape his concept of descent with modification? a) species diversity declines farther from the equator. b) fewer species live on islands than on the nearest continents. c) birds live on islands located farther from the mainland than the bird's maximum nonstop flight distance. d) south american temperate plants are more similar to the tropical plants of south america than to the temperate plants of europe. e) earthquakes reshape life by causing mass extinctions.
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in 1887 a strange nerve disease attacked the people in the dutch east indies. the disease was beribe...
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