IIn providing a bridge from Reason One to Reason Two, the writer draws
on what we will here call Reason Three, paraphrasable as follows:
Maintaining the traditional lawn is unnecessary, since varieties of grass that are more
appropriate to the West are readily available. After she demonstrates that herbicides are
dangerous, the writer shows that this danger is unnecessary, given the existence of buffalo
grass and other varieties "that are more resistant to pests, disease, and weeds and better
suited to the West" (paragraph 5). She
then lists some of the merits of buffalo grass, which are 1)
its appropriateness to our region, 2) the fact that it is almost maintenance-free, and therefore
economical. This leads the writer directly into her second reason, which has to do with cost.
