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A freshwater aquatic food web. The blue arrows show a complete food chain (algae → daphnia → gizzard shad → largemouth bass → great blue heron). A food web is the natural interconnection of food chains and a graphical representation of what-eats-what in an ecological community.
Cartopedia: The Ultimate World Reference Atlas; Celestia; Google Earth - (proprietary license); Gravit - a free (GPL) Newtonian gravity simulator; KGeography; KStars; NASA World Wind - free software (NASA open source)
This is a list of free and open-source software (FOSS) packages, computer software licensed under free software licenses and open-source licenses. Software that fits the Free Software Definition may be more appropriately called free software ; the GNU project in particular objects to their works being referred to as open-source . [ 1 ]
Free ? Crash Course (YouTube) Do Lectures: Multidisciplinary Videos of live talks and lectures. Free Creative Commons Attribution–NonCommercial–NonDerivative: YouTube: EdX: Multidisciplinary Educational courses with lectures, quizzes and exams provided by universities for free. Free/Paid ? EdX: FORA.tv: Multidisciplinary Academic videos ...
Sugar is a free and open-source desktop environment designed for interactive learning by children. It was developed by SugarLabs. [2] [3] Developed as part of the One Laptop per Child (OLPC) project, Sugar was the default interface on OLPC XO-1 laptop computers.
Addie, Rufus and Katie go to a dig site to help Dr. Rock Hound (voiced by Ed Gilbert) to excavate and assemble a prehistoric animal's skeleton and become official fossil finders. In this game, players learn about paleontology, uncovering fossils, the different time periods of prehistory and prehistoric animal species (most notably dinosaurs ).
Animal Atlas is a half-hour educational wildlife television series that "takes children on a tour of discovery, uncovering the secrets of how animals live and thrive. Young viewers meet animals from the familiar to the astounding, and the domesticated to the wild, including the diverse creatures of the African savanna, the finned and flippered of the big deep, and the colorful cast of the ...
Freeware is in contrast to commercial software, which is typically sold for profit, but might be distributed for a business or commercial purpose in the aim to expand the marketshare of a "premium" product. Popular examples of closed-source freeware include Adobe Reader, Free Studio and Skype.