Which example best explains the interaction of Earth’s spheres when acid rain affects trees?

Question

The geosphere is interacting with the hydrosphere.
The atmosphere is interacting with the hydrosphere.
The biosphere is interacting with the hydrosphere and the cryosphere.
The atmosphere is interacting with the hydrosphere and the biosphere.

Answer 1

The best example that explains the interaction of Earth’s spheres when acid rain affects trees is:

The atmosphere is interacting with the hydrosphere and the biosphere.

Here's the reasoning: Acid rain is formed when pollutants in the atmosphere (from human activities, for example) combine with water vapor in the hydrosphere, leading to precipitation with a lower pH that adversely affects trees (part of the biosphere). Thus, this interaction involves all three spheres: the atmosphere (where the pollutants come from), the hydrosphere (as the water source for the rain), and the biosphere (the trees that are affected).