Yeah, a tricky question. i stated that my two differences are the protrayal of natural environment and natural rhythms, and the differences stem from their contexts blah blah. couldnt think of a more complicated issue to compare with.
its more or less my prepared, because i structured that as:
natural environment BNW,
natural environment BR,
natural rhythms BNW,
natural rhythms BR.
my friends all had some more complicated issues, such as theme of religion, urbanisation or something and said the two texts portray them differently. which made me feel a bit inadequate actually....