Brown Middle School is trying to become a "green school". To do this, parents, faculty and staff members are meeting to discuss ways to reduce their use of non-renewable natural resources, overall. After reviewing the government data in science classes, the faculty has asked for input from students. A list of good ideas was generated. Several students suggested things that might fall under the heading of "other" in their graph. All BUT ONE idea could fall under the "other" category. That is