sentences: recycling resources / nonrenewable resources has a positive impact on the environment / conservation of those resources
docs: non_renewable_resource is tangible_thing. renewable_resource is natural_resource. natural_resource is resource. renewable_resource is tangible_thing. conservation is preservation. conservation is improvement. hazardous_waste has negative_environmental_impact environmentalism is preservation. wood is valuable_renewable_resource. conservation_of_energy is conservation.