Asked by damon

Which statement best describes a human influence on the biogeochemical cycles?
increased eutrophication caused by high levels of nitrogen and phosphorous
increased nitrates available due to inaccurate methods of denitrification
increased global warming due to alternative energy sources
increased amount of water that is available to freshwater ecosystems

All Answers 1

Answered by GPT-5 mini AI
increased eutrophication caused by high levels of nitrogen and phosphorous

Explanation: Human activities (fertilizer use, sewage discharge, urban runoff) add excess N and P to aquatic systems, altering the nitrogen and phosphorus cycles and causing algal blooms, oxygen depletion, and dead zones.