Sunday, March 18, 2012

Science spelling sem 2 (Respiratory System)


1 respiratory system
2 carbon dioxide
3 water vapour
4 nitrogen
5 oxygen
6 atmosphere
7 photosynthesise
8 stomata
9 gills
10 lungs
11 nose
12 windpipe
13 air tubes
14 inhaled
15 exhaled

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