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15 Respiratory System, Breathing includes Oxygen exchange, Breathing includes inhale, Oxygen exchange includes <math xmlns="http://www.w3.org/1998/Math/MathML"> <mrow> <mtext> Blood passing through the capilaries pick up the </mtext> <mmultiscripts> <mtext> o </mtext> <mtext> 2 </mtext> <none/> </mmultiscripts> </mrow> </math>, Respiratory Ailments include Black Lung, Carbon Dioxide exchange includes ????, skin used by earthworms, flatworms, jellyfish, Gills vs Lungs, inhale includes diaphram moves down, oxygen from the spiricles (openings in the abdomen to bring air in) to internal cells. because the spiricals are small openings, soapy water is an effective insect killer. It coats the openings and prevents oxygen from getting in. A non-poisonous alternative to poisonous wasp killer., Oxygen exchange includes <math xmlns="http://www.w3.org/1998/Math/MathML"> <mrow> <mmultiscripts> <mtext> O </mtext> <mtext> 2 </mtext> <none/> </mmultiscripts> <mtext> passes through the wall </mtext> </mrow> </math>