Microbial communities in Kartchner Caverns (Arizona, USA) thrive despite extremely low organic carbon availability. Genetic analysis suggests that archaea contribute significantly to the ecosystem’s energy flow. Which metabolic strategy is MOST LIKELY responsible for primary production in this cave ecosystem?

Question

Answer

Anaerobic digestion of organic matter from bat guano

Answer

Oxygenic photosynthesis by cyanobacteria

Answer

Oxidation of ammonia (NH₃) by archaea for energy generation

Answer

Sulfur reduction to produce hydrogen sulfide for other microbes

Crowdly

Microbial communities in Kartchner Caverns (Arizona, USA) thrive despite extreme...

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