Microbiology of Waste Water
Some cyanobacteria produce potent neurotoxins that, if ingested, will kill humans. These cyanobacteria are most likely to contaminate

water rich in organic carbon wastes but poor in phosphate
water that are anoxic
water rich in phosphate wastes but poor in organic carbon
None of these

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Microbiology of Waste Water
Biomass

is unlikely to be a major source of energy globally
offers the consumer high quality energy with low environmental impact
provides the U.S. with about 50% of its energy
consists largely of wood, animal, and human waste

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