The type of water in the Earth's oceans is:
C. Salt water
Explanation:
1. Oceans contain salt water: The water in the Earth's oceans is predominantly saltwater. This saltwater comes from various sources such as minerals in the Earth's crust and volcanic activity.
2. Salinity: The salt content in ocean water, known as salinity, is around 3.5%. This salinity level can vary depending on factors like evaporation rates, precipitation, and freshwater input from rivers.
3. Marine life adaptation: Many marine organisms in the oceans have adapted to survive in saltwater environments. They have specialized mechanisms to regulate salt levels in their bodies.
Therefore, the water in the Earth's oceans is primarily saltwater, making option C - salt water the correct answer.
