*Most fungi... Others can. https://en.wikipedia.org/wiki/Mucormycosis
It could be defined that way. But your set is in a way more difficult to resolve as it has only one element. In the diagram the number of elements (4 sets) of the set is equal to the number 4 i.e. a set defines a number by simply counting its elements.
There are probably some other nice properties if you define it that way.
Humanity may have enough of it but it is not distributed evenly.
Why would you cut it into pieces. Just burn it i'd say...