I have a few questions on how the zombies work:

If part of a zombie is severed off, does it regrow that segment? Like if one loses a limb, will it grow a new one? If its head is cut off will it grow a new head or a new body or does the head just reanimate?

I know in a lot of zombie lore, zombies are attracted to sounds and lights. Is that true for this RP?

If, hypothetically, a character gets scratched by a zombie, are they infected? If they get an open wound do they get infected from the air or touching stuff that zombies have touched or just zombies themselves?

Where is Icarus geographically? Before the apocalypse were the countries essentially the same as they are today?