Water Tiger for Chemistry Teacher

It was written as a thank you for the good and thorough teaching of the material.
Oh this fecal (Ferum, Chromium and Aluminium passive) and myvin (minimum degree of ok-na - thus a reboot)

Then the work was cut out of paper A4, so it allowed a violation of the composition position in the paper. Work is not sold, the minimum price I can do is indicated.