Plunge pool softer or fractured rock has been eroded back to a knickpoint, water continues to bombard its base. Because this rock is often less resistant than overlying strata, the water from the higher elevation continues eroding downward until an equilibrium is achieved. A somewhat similar bowl-shaped feature developed by flowing water, as opposed to falling water, is known as a scour hole. These occur both naturally and as a result of bridge building. Plunge pool A plunge pool (or plunge basin or waterfall lake) is a deep depression in a stream bed at the base of a waterfall or shut-in. It
Conversion funnel Conversion funnel Conversion funnel is a phrase used in e-commerce to describe the journey a consumer takes through an Internet advertising or search system, navigating an e-commerce website and finally converting to a sale. The metaphor of a funnel is used to describe the way users are guided to the goal with fewer navigation options at each step. Using this metaphor, advertising efforts can be aimed at "upper funnel", "middle funnel", or "lower funnel" potential customers. Typically a large number of customers search for a product/service or register as page view on a referring page which is linked to the