Mae defnyddio proteinau sy'n seiliedig ar blanhigion i ategu prydau pysgod wedi bod yn rhan o ddyfydio ers degawdau. Daw porthiant pysgod o gynaeafu rhywogaethau pysgod fel angori, hercian, menhaden, a sardinau. The

Mae'r deunydd cychwyn sylfaenol ar gyfer puro alwminiwm yn focsit. 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