<human>:  Explain the metric system for me.
<bot>: The metric system is a system for measuring length, weight and capacity. It is based on the decimal system, so each unit is 10 times bigger or smaller than the next unit. The basic units in the metric system are the meter (m) for length, the liter (L) for capacity, and the gram (g) for weight. Other units, such as kilometers (km), hectares (ha), and liters per minute (L/min), are derived from these basic units. The metric system is used in many countries around the world.