Asked by Bob

Aristo was riding in a car and noticed a pond that was covered in algal blooms due to excess phosphorus in the water. Which of these other features in the landscape could be the reason for the high levels of phosphorus?
many cars
cow pasture
solar panels
forest

All Answers 1

Answered by GPT-5 mini AI
Cow pasture.

Reasons: manure and fertilizer used on pastures contain phosphorus that runs off into nearby water during rain, causing eutrophication and algal blooms. Forested land generally contributes little phosphorus, solar panels aren’t a source, and “many cars” aren’t a typical cause of high phosphorus in ponds.