Question

which scenario describes an interaction between two different earth spheres?
○ water flows from a stream to a lake.
○ gravity moves rocks to another location.
○ lions use energy to catch other animals for food.
○ bears dig big holes in the ground to protect their young.

Explanation:

• Water flows from a stream to a lake: Both stream and lake are part of the hydrosphere. So, this is an interaction within the same sphere.
• Gravity moves rocks to another location: Rocks are part of the geosphere. This is an internal geosphere - related process.
• Lions use energy to catch other animals for food: Both lions and the animals they catch are part of the biosphere. This is an interaction within the biosphere.
• Bears dig big holes in the ground to protect their young: Bears are part of the biosphere and the ground is part of the geosphere. This is an interaction between the biosphere and the geosphere.

Answer:

Bears dig big holes in the ground to protect their young.