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.
There are different types of specifications, which generally are mostly types of documents, forms or orders or relates to information in databases. The word Specification merely refers to the act of To state explicitly or in detail or to be Specific. A specification may refer to a type of technical standard (the main topic of this page). Using the word specification without additional information to what kind of specification you refer to is confusing and considered bad practice within systems engineering. A Requirement specification is a set of documented requirements to be satisfied by a material, design, product, or service.