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Biology, 21.06.2019 23:30
Compare and contrast region e in the illustration above with region d. describe the physical characteristics of each region.
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Biology, 22.06.2019 12:00
The earth's oceans are made up of chlorine, and trace elements. a) carbon, oxygen b) oxygen, silicon c) hydrogen, oxygen d) nitrogen, oxygen
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Biology, 22.06.2019 16:30
These are the components of the reservoirs of carbon that are exchanged in our environment.
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Biology, 23.06.2019 00:10
1. beginning with all chambers of the heart in the "relaxed" phase, describe the cardiac cycle in mammals, with systole and diastole of the atria and ventricles. for each time point in the cycle you select, state the following: • whether the atria and ventricles are contracting or relaxing • whether the av valves and semilunar valves are closed or open • whether the pressure in the atria and ventricles is high or low
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Explain how sulfur impurities in coal can lead to increased acidity in rainwater and to the subseque...
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