Per capita ecological footprint (EF), or ecological footprint analysis (EFA), is a means of comparing consumption and lifestyles, and checking this against nature's ability to provide for this consumption.
This article includes a list of references, related reading or external links, but its sources remain unclear because it lacks inline citations. (April 2016) (Learn how and when to remove this template message) A Product Requirements Document (PRD) is a document containing all the requirements to a certain product. It is written to allow people to understand what a product should do.
What is requirements management? A requirement is a defined capability to which the results of certain work (in this case software development) should meet. It is a continuous process throughout the lifecycle of a product and requirements can be generated by many stakeholders including: customers, partners, sales, support, management, engineering, operations, and of course product management.