1. Kids are afraid of ghost because ghosts are sometimes scary when you know that they can go through walls and go through you and anything. Kids sometimes watch movies about ghosts and get scared thunking that a ghost will haunt them.
2. I think feeding raccoons when they are at trash cans is the best idea because if it is at trash cans that means it has already its food and you shouldnt disturb it and give it more food because it will just be going to waste. Wild animals dont always eat food when you give it food. Wild animals are born knowing that to eat they eat out of trash cans so they already have their survival skills so dont bother them.
3. I dont really understand this one but i think that mouse color affects its survival because it is probably easy to spot so mouses probably get found alot by predetors.
4. I am pretty sure that mother ducks care for their babies because they teach them how to swim and the mother ducks feed its babies and they are always swimming in lines or groups until the baby ducks are grown up and old enough to go on their own. Basically, the mother ducks help its babies until it is old enough to go out on its own.
Hope this helped! :)