Aquatic Habitats--Ecology/Earth Science lesson plan (grades 6-8)--DiscoverySchoo Students learn that the way a community disposes of its wastewater may negatively affect local aquatic habitats. Both governments and citizens can take action to ensure that waste water will be disposed of in a way that is not destructive to aquatic habitats. http: //school.discovery.com/lessonplans/programs/a...