The heart valves act like doors.
truefalse...
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Which of the following is not considered an appendage of the skin? nails glands follicles none of the above
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Biology, 22.06.2019 21:30
What do you think scientists face when classifying new organisms?
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Changes in landforms result from slow changes that occur over long periods of time
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Biology, 23.06.2019 10:30
Which best describes the movement through the nephron? blood is passed into the nephron and removed through the urethra. once waste materials exit the blood, they are removed in the urine. some of the materials that exit the blood can be returned to the blood. high quantities of sugars and water are excreted in the urine.
Answers: 2
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