Breeders call baby rabbits "kits"
yes
Obviously one of the rabbits is a female and not male.
Male rabbits are pose to be 6 months to bred. with a female rabbit.
DNA testing.
It will take around a month until the babies are born. You'll need to separate the female rabbits before she gives birth and until the babies have grown up. You should be able to put them back together after. But the rabbit without babies may get jealous and kill the babies.
about 6-12 babies
Yes, you can leave them together, but the pregnant female rabbit will eat her babies when they are born. So, you probably shouldn't leave them together.
Females are does, males are stags, and babies are pups (although some breeders call them kittens, the scientific term is a pup).
The mother rabbit will produce milk to feed her babies and if you watch would will be able to identify which female they are sucking on.
Baby rabbits are called Kitten's, this is often shortened to Kit's
Yes but they will try to rebreed with the doe (female rabbit).
Yes, it is natural for them to nurse their babies. If the mother doe does not, you can hand feed them with an eye dropper and replacement kitten milk. Do not use cows milk or it can dehydrate the kits.