By the way, if you want to really understand Pythagoras’s theorem, Cut The Knot has a collection of 118 proofs.
As for the ‘tricky seedlings’ example, another question would be:
I would expect plants whose seeds are dispersed by animals to be more k-selected and have less ‘tricky’ seedlings compared with plants whose seeds are dispersed by the wind. Can I think of any counterexamples?
For the question about mould and seedlings, there are some interesting spin-off questions that you could come up with e.g.
I heard speculation somewhere that endothermy may have evolved to protect against fungal infections. If heat is good at killing off fungi, why do compost heaps work better when they are insulated so that they get hot on the inside?
By the way, if you want to really understand Pythagoras’s theorem, Cut The Knot has a collection of 118 proofs.
As for the ‘tricky seedlings’ example, another question would be:
For the question about mould and seedlings, there are some interesting spin-off questions that you could come up with e.g.
(And then fungi evolved to cope with endothermy.)