In short. Episode 108, Fuel crops / [produced by Switch International].

Episode 108 - Fuel Crops: Most of the matter that makes plant material comes from CO2 extracted from the air. By using crops to make fuel, any carbon released to the air has only recently been removed by the plant, so there is a zero net gain to atmospheric CO2.

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Bibliographic Details
Format: Video
Language:English
Published: Derry, NH : Chip Taylor Communications, 2011.
Series:Academic Video Online
Subjects:
Online Access:Click for online access
Description
Summary:Episode 108 - Fuel Crops: Most of the matter that makes plant material comes from CO2 extracted from the air. By using crops to make fuel, any carbon released to the air has only recently been removed by the plant, so there is a zero net gain to atmospheric CO2.
Item Description:Title from resource description page (viewed May 06, 2019).
"A lesson on almost everything".
Physical Description:1 online resource (3 minutes)
Playing Time:00:02:32
Language:In English.