DAT Reading Comprehension Quiz
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PASSAGE UNDERSTANDING
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PASSAGE
Bioremediation harnesses biological processes to treat contaminated environments. One strategy is phytoremediation, which uses plants to remove, degrade, or contain pollutants. Certain plants, known as hyperaccumulators, can absorb and concentrate heavy metals in their tissues. For organic pollutants, the process often relies on microbial activity. In some cases, bioaugmentation is employed, involving the introduction of non-native microbial strains selected for their ability to degrade a target contaminant. The contaminants are often xenobiotic compounds, meaning they are synthetic chemicals not naturally found in biological systems. Effective bioremediation frequently depends on microbial consortia, synergistic communities of different microorganisms that work together. The ultimate goal for many organic contaminants is complete mineralization, the conversion of complex organic molecules into simple inorganic compounds like carbon dioxide and water.
According to the passage, 'mineralization' is the process of:
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