A major role that fungi play in ecosystems is c)recycling nutrients from dead organisms back into the food chain is a major role that fungi play in ecosystems. So, correct option is c.
Ecosystem is the system in which every organisms exchange energy with each other by using several mechanisms.
Fungi contribute to nutrient cycling by promoting the microbial activity via a combination of comminuting, mixing, and dissemination of the inoculums
Fungi play an important role in the energy cycling within, and between, ecosystems. Fungi are found in the terrestrial, marine and freshwater environments, and are part of a diverse community of the “decomposers” that break down dead plants and animals.
Hence, option c is correct.
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(Complete question) is:
what is a major role that fungi play in ecosystems?
a)fixing carbon from the atmosphere
b)synthesizing glucose from carbon dioxide and water decontaminating wastewater
c)recycling nutrients from dead organisms back into the food chain