Final answer:
The scenario documenting an interaction between different Earth spheres is the runoff from farming areas into local streams, illustrating an intersection between the lithosphere and the hydrosphere.
Step-by-step explanation:
The student's question asks which scenario describes an interaction between two different spheres of the Earth. When considering the provided options against an understanding of Earth's systems and the ways they interconnect, we can see that answer choice 2, Runoff from farming areas into local streams, is an event that represents an interaction between the lithosphere (land) and the hydrosphere (bodies of water). Agricultural runoff includes soil, fertilizers, and pesticides from the land (lithosphere) that enter local streams, rivers, or lakes (hydrosphere), affecting the quality and dynamics of the water bodies. The scenario of runoff illustrates the interdependence and influence of human activity on Earth's systems, where one action in the biosphere (agriculture) impacts both the lithosphere and hydrosphere.