Final answer:
A drainage divide is a boundary that determines the direction in which water flows into different drainage basins. It is often a high ridge on land, like the Continental Divide, which separates waters flowing into different oceans.
Step-by-step explanation:
A drainage divide is a ridge or strip of high ground that separates one drainage basin from another. It serves as a boundary between different watersheds, ensuring that precipitation falling on one side flows to one basin, while precipitation on the other side flows into another. For example, the Continental Divide in North America is a major drainage divide that dictates whether water will flow towards the Atlantic or Pacific Ocean.
A drainage divide is a) A ridge or strip of high ground separating one drainage basin from another. It serves as a natural boundary between different drainage basins, directing the flow of water into specific areas. For example, the Continental Divide in North America is a major drainage divide that separates the flow of water into the Pacific Ocean and the Atlantic Ocean.