Question

Look at the phosphorous cycle. What activity here is leading to an increase in algae in the pond/water source?
Runoff from phosphates in agriculture/farmin
Rock erosions/ soil carries from rain water
From the decomposers
Silt settling and forming new rock

Answer 1

The activity that is leading to an increase in algae in the pond or water source is **runoff from phosphates in agriculture/farming**. This runoff often contains fertilizers that are high in phosphorus, which can be carried into nearby water bodies. When these phosphorus-rich nutrients enter aquatic ecosystems, they can lead to eutrophication—a process that promotes excessive algae growth. This can create harmful algal blooms, which deplete oxygen in the water and can be detrimental to aquatic life.