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.
The Benefits of Milk Thistle on the Liver. The powdered seeds and extracts of the milk thistle plant are a well established herbal superfood for protecting, detoxifying and regenerating the liver, one of the most important organs of the human body.