Explaining Mitochondria Pattern Interest

[Pythagorean]

can any of you explain this interest pattern?

http://www.google.com/insights/sear...s/when-did-mitochondria-evolve/"]mitochondria&geo=US&cmpt=q[/url]

 

[epenguin]

Obviously the academic year, evidently you cannot teach much biochemistry without mitochondria so it mainly goes into the autumn term; there is a secondary regular peak around Feb-Mar when probably more are reading than shows - they previously printed it out.

 

[Pythagorean]

Well, yes, but it has a consistent peak of two different sizes. In any of my topics (nonlinear and complexity) the peaks are about the same size. Mitochndria uber peaks in October.