Question

which describes a way in which phosphorus may enter into the phosphorus cycle? earthquakes release phosphorus. phosphorus is carried in the rain that was evaporated from lakes. human use of fertilizers release phosphorus into the groundwater. phosphorus is transpired from the leaves of plants.

Explanation:

• Earthquakes do not release phosphorus in a way that enters the phosphorus cycle.
• Phosphorus is not carried in rain evaporated from lakes as it is not a gas - phase element like carbon or nitrogen (it is mainly in solid or dissolved forms in water).
• Transpiration from plant leaves is mainly for water, not phosphorus.
• Human use of fertilizers (which contain phosphorus) can release phosphorus into groundwater. When fertilizers are applied to the soil, phosphorus can leach into the groundwater, which is a part of the phosphorus cycle as it can then be taken up by plants again or move through the ecosystem.

Answer:

Human use of fertilizers release phosphorus into the groundwater.