Drainage basin: The area drained by a river and its tributaries. A drainage basin is considered to be an open system because water can be added or lost from a drainage basin. Source: The beginning of a river. A river may have multiple sources.
Milk thistle (Silybum marianum) is a thorny plant presenting decorative leaves with a white pattern of veins and purple flower heads. The plant originates from mountains of the Mediterranean region, where it forms scrub on a rocky base.
Milk thistle (which has the scientific name Silybum marianum) grows mostly in California (although it can be grown in many parts of the world with a warm climate) thatâs commonly turned into extract or supplement form in order to reap its cell regenerating milk thistle benefits.