Human Impact on Biogeochemical Cycles Worksheet is a worksheet that answers question on Human Impact on Biogeochemical Cycles. Using the textbooks, the University Library or other resources, answer each of the following questions in 150- to 500-words. Be sure to provide references for the sources you use. The first question is 'Your neighbor faithfully applies fertilizer to his lawn to ensure beautiful, healthy green grass. Explain how your neighbor’s fertilizing habit affects at least one nutrient cycle.'