Neither the calcium nor the oxalic acid in spinach is destroyed when spinach is cooked.
Many leafy green vegetables other than spinach that are rich in calcium also contain high concentrations of oxalic acid.
Oxalic acid has little effect on the bodys ability to absorb nutrients other than calcium.
5.Joyce: Three years ago the traffic commission modified our towns busiest intersection for better visibility, a commendable effort to cut down on traffic accidents there. Gary: Over the past three years there have been more, not fewer, traffic accidents per week at that intersection, so the modification has increased the likelihood of accidents there
The answer to which of the following questions would be most useful in evaluating Garys argument?
What proportion of the towns drivers involved in accidents that occurred prior to the modification suffered personal injury in their accidents?
How long, on average, had the members of the traffic commission held their offices when the modification was implemented?
Do a majority of the towns residents approve of the traffic commissions overall performance?
What measures have nearby towns taken within the last three years in order to improve visibil-ity at dangerous intersections?
How has the volume of traffic at the towns busiest intersection changed over the last three years?
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