Green economy is the use of computers and other electronic devices and equipment used in energy-efficient and eco- friendly ways.
According to Karl there are 6 sectors-Renewable Energy, Green Buildings, Sustainable Transport, Water Management and Waste Management.
Renewable energy comes from non-finite sources within the environment that cannot run out
Green buildings are buildings that, because of it's construction and features, can maintain or improve the quality of life of the environment in which it is located.
Sustainable Transport is any transportation that is 'green' and has low impact on the environment.
Water Management is the process of planning, developing, and managing water resources.
Waster Management involves the processes of waste collection, transportation, processing, as well as waste recycling or disposal.