Final answer:
Metagenomics is the best-suited technique for quickly identifying new species and analyzing environmental pollutants, as it studies genomes of microbial communities in biofilms.
Step-by-step explanation:
The technique most suited to the rapid identification of new species and the analysis of the effects of pollutants on the environment is metagenomics. Metagenomics is the study of collective genomes of multiple species that grow and interact in an environmental niche. Unlike traditional microbiology, which relies on pure cultures, metagenomics examines microbial communities or biofilms, allowing for a more comprehensive understanding of biodiversity and ecological impacts. This field has been greatly advanced by the advent of Next-Generation Sequencing technologies, providing powerful tools for environmental assessment and preservation.