What is the basic unit of volume in the metric system?

The liter is the basic unit of volume in the metric system. It is defined as the volume of a cube that measures 10 centimeters on each side, which is equivalent to 1,000 cubic centimeters. The liter is widely used in science, medicine, and everyday applications to measure liquids and gases, providing a standardized unit that is easy to understand and use globally.

While other units like milliliters and cubic centimeters are also metric units of volume, they are derived from the liter. One liter equals 1,000 milliliters and 1,000 cubic centimeters. The gallon, on the other hand, is an imperial unit of volume that is not part of the metric system, making it less relevant in this context. Therefore, identifying the liter as the basic unit in the metric system is essential for accurately communicating measurements in scientific and practical applications.