Data Flow Diagram Symbols. DFD Library

"A value chain is a chain of activities that a firm operating in a specific industry performs in order to deliver a valuable product or service for the market. ...
The concept of value chains as decision support tools, was added onto the competitive strategies paradigm developed by Porter as early as 1979. In Porter's value chains, Inbound Logistics, Operations, Outbound Logistics, Marketing and Sales and Service are categorized as primary activities. Secondary activities include Procurement, Human Resource management, Technological Development and Infrastructure." [Value chain. Wikipedia]
This Porter's value chain matrix diagram example was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Matrices solution from the Marketing area of ConceptDraw Solution Park.

This ecology infographic example was created on the base of the infographics "Greenhouse gas emissions in the EU" from the Debating Europe website. [debatingeurope.eu/ wp-content/ uploads/ 2013/ 06/ TH_ 2_ social.png]
"A greenhouse gas (sometimes abbreviated GHG) is a gas in an atmosphere that absorbs and emits radiation within the thermal infrared range. This process is the fundamental cause of the greenhouse effect. The primary greenhouse gases in the Earth's atmosphere are water vapor, carbon dioxide, methane, nitrous oxide, and ozone. Greenhouse gases greatly affect the temperature of the Earth; without them, Earth's surface would average about 33 °C colder, which is about 59 °F below the present average of 14 °C (57 °F)." [Greenhouse gas. Wikipedia]
The ecology infographic example "EU greenhouse gas emissions" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Management Infographics solition from the area "Business Infographics" in ConceptDraw Solution Park.