Question

which scenario describes an interaction between two of earths 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:

• Earth has four spheres: geosphere (land - rocks, soil etc.), hydrosphere (water), atmosphere (air), and biosphere (living things).
• In the first option, water flowing from stream to lake is within the hydrosphere (no interaction between two different spheres).
• In the second option, gravity moving rocks is within the geosphere (no interaction between two different spheres).
• In the third option, lions using energy (biosphere) but no interaction with another sphere.
• In the fourth option, bears (biosphere) digging holes in the ground (geosphere) shows an interaction between biosphere and geosphere.

Answer:

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