Download lesson plan Grade Second Grade Third Grade Subject Science Life Science View aligned standards No standards associated with this content. Learning Objectives Students will be able to determine solutions for encouraging recycling in their community. Introduction(5 minutes) Ask students what they ...
Due to its toxicity, plastic cannot be recycled back into new food-grade plastic products, the organization explained, adding that “the flood of 400 million tons/year of cheap new plastic production kills the business case for large-scale investment in plastic recycling.” The situation is furth...
Another concern with using alum residual is that alum residual contains very limited concentrations of vegetation nutrients in excess of typical soils, and has a diminished value as a low-grade fertilizer in comparison to sewage sludge. However, alum residual has been shown to increase soil moisture...