Answer:
I come without being fetched at night hides away as soon as daylight strikes. Although I may look small I am much mightier than what you can imagine.
I am an English word that is as long as I am valued. What am I?
Alone I am 24th with a friend I am 20. Another friend and I am unclean.
I go into the water black and come out red. What am I?
I turn around once. What is out will not get in. I turn around again. What is in will not get out.
Give it food and it will live, give it water and it will die.