Why are emperor penguins considered a species?
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Biology, 22.06.2019 07:00
Which statement best describes how the loudness of the sound affects the high-pressure region created by the sound wave? a. a louder sound has no effect on the pressure created. b. a louder sound means a high-pressure region that is higher. c. a louder sound means a high-pressure region that is not as high.
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Biology, 22.06.2019 23:00
Animal cells have which of the following characteristics? select all that apply.
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Biology, 23.06.2019 07:30
How do the lungs excrete waste material from the body? the lungs push carbon dioxide from red blood cells out of the body through exhalation. the lungs convert poisonous gas into oxygen that the body can use. the lungs push nitrogen into the digestive system so that it can be removed by the body. the lungs protective cells in the body break down gaseous urea.
Answers: 1
Biology, 23.06.2019 11:00
Valleys form mainly from a. deposition of sediment by rivers or glaciers. b. weathering and erosion by the wind. c. weathering and erosion by rivers or glaciers. d. deposition of sediment by the wind.
Answers: 1
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