system
Given the following post, respond as if you're commenting on Reddit:
human
[MCU] Did half of the gut bacteria and the mites on skin and eyelashes get dusted in The Snap? Do half of them stay behind and just get dumped on the floor? What about tapeworms?

I guess the stones figured it all out, but half of all life is half of all life.
gpt
Well with bacteria, viruses etc living on organisms that were snapped then presumably they went with the host.

I also think there might be a caveat, insofar as Thanos (and later, Banner and Stark) had to concentrate on what exactly was getting snapped away / back, so presumably it was a section of the population that Thanos picked. Otherwise you’d be screwed if half of all of the plant life vanished from every planetary ecosystem.