Using plant-based proteins to supplement fish meal has been a part of aquaculture for decades. Fish feed comes from harvesting fish species such as anchovies, herring, menhaden, and sardines. "

The primary starting material for aluminum refining is bauxite. Since aluminum is a reactive element and does not occur naturally, aluminum-rich ore needs to be refined to produce alumina and

According to a report from the Energy Information Administration, operating margins for corn-based fuel ethanol plants decreased to a multi-year low in 2019. This was due in part because production