Evaluate biological methods of metal extraction from information provided. (HT only)

In the subtopic Alternative methods of extracting metals, this learning objective focuses on evaluate biological methods of metal extraction from information provided. (HT only). Within Using the Earth's resources and obtaining potable water, students should explain this idea in the exact curriculum context rather than as an isolated fact. Approved keywords for this objective include HT only. biological methods means techniques that utilize living organisms to extract metals from ores or waste. Avoid students often confuse the processes of phytomining and bioleaching, thinking they are the same; instead to fix this, students should focus on the fact that phytomining uses plants to absorb metal compounds from soil, while bioleaching uses bacteria to produce leachate solutions containing metal compounds. For exam answers, focus on evaluating the advantages and disadvantages of phytomining and bioleaching compared to traditional methods.