1) What shape is the aveoli a) circle b) square c) hexagon d) helix e) triangle f) Octogon 2) What system is the anus in a) circulatory b) digestive c) Respiratory 3) Does the liver digest food a) Yes b) No 4) You breathe through you nose and your a) ear b) mouth c) nose 5) What does  co2 stand for a) oxygen b) carbon dioxide c) Carbon Monoxide 6) How many elements are on the periodic table a) 123 b) 118 c) 132 d) 332 e) 987 f) 654

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