Question

unit test: earths surface - part 1
in which sphere does a dolphin swim?
○ hydrosphere
○ atmosphere
○ lithosphere
○ magnetosphere

Explanation:

The hydrosphere includes all water on Earth's surface such as oceans, seas, and lakes. Dolphins are aquatic animals that swim in these water - bodies. The atmosphere is the air - layer around the Earth, the lithosphere is the solid outer part of the Earth, and the magnetosphere is the region around Earth controlled by its magnetic field.

Answer:

hydrosphere