Green computing can be achieved by: a. using video conferencing, electronic meeting systems, and groupware. b. replacing meetings over computer networks with actual face-to-face meetings. c. replacing one large server with several underutilized smaller servers. d. using computing devices that are nonbiodegradable.

using video conferencing, electronic meeting systems, and groupware

Explanation:

Green computing simply means the use of computer in a way that's environmental friendly.

One way to achieve this is through using video conferencing, electronic meeting systems, and groupware. This allows the use of computers not to have a negative effect on the environment.

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