Given scientific fact as input, generate the question from this fact such that it can be answered from the input.

[Q]: Simple kind of diffusion do small hydrophobic molecules squeeze through lipid molecules.
[A]: What kind of diffusion do small hydrophobic molecules squeeze through lipid molecules?


[Q]: A change of season and less food usually cause certain animals to migrate.
[A]: Which two environmental changes usually cause certain animals to migrate?


[Q]: Lymphatic capillaries are interlaced with the arterioles and venules of cardiovascular system system.
[A]:
Lymphatic capillaries are interlaced with the arterioles and venules of which system?