Question

how does the conservation plan help reduce the ecological footprint of the tran family?
the tran family enacts a conservation plan to recycle solid wastes, including glass, metal, and plastics. after 1 month, they calculate that their plan has reduced their solid waste output by 30%. however, the plan did not alter the volume of glass, metal, & plastic resources that the family used.
● increases the cost of material resources
● reduces the cost of material resources
● reduces the amount of space needed for landfills
● preserves material resources for use in the future

Explanation:

Recycling solid wastes like glass, metal, and plastics reduces the amount of waste going to landfills. Less waste in landfills means less space is needed for them. Also, recycling can help preserve material resources (even though in this case the volume used wasn't altered, generally recycling does help preserve resources for future use).

Answer:

reduces the amount of space needed for landfills, preserves material resources for use in the future