Shoppers all over the country hear this question at
checkout stands every day. Many people prefer one type
of bag over the other, but they usually base their selection
on their own convenience rather than on an informed
decision regarding which type of bag is better for our
This investigation will provide a procedural framework
to help you conduct research on which type of bag is
better. The five steps outlined in these pages will
help you focus on a wide variety of factors affecting
the issue. You will follow a plan for evaluating the
issue to determine if one type of bag is better than
the other for the Earth system.
You won't do the actual research while viewing these
pages. You'll receive guidelines and suggestions for
conducting your own research; then you'll proceed in
whatever direction you or your group decides.