“good” is an extremely relative term when you’re talking about species. are humans “good” for cows? for corn? they are more successful species because of us…
one thing mold does do is break down things into parts that can be reused by other organisms. this is “good” when it’s organic matter on the forest floor, and “bad” when it’s food spoilage. they are used in making some foods and medicines, so we’d miss that, for sure.
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