Explain whether molds are good or bad for nature.

Mold fungi are microscopic, adapted to a variety of living conditions. They have both positive and negative meanings in nature. Negative: they are parasites, they also release toxins that cause various diseases in all living organisms. Positive: some species kill viruses by controlling their numbers; take part in the decomposition of dead organisms, performing the role of orderlies in nature and are irreplaceable participants in the cycle of substances.