Well, if your talking about animals... They have to be in the right environment This includes...
Water pollution can make water unfit to drink.
Pollution Pollution
This is not considered an unfit mother. Where a mother lives is not anything that makes a mother fit or unfit. A mother who is a drug addict or an alcoholic that is drunk all the time is an unfit mother.
It's not a matter of being unfit, but the best interest of the children. see link below
Yes, probably...
Polluted
the only thing in my eyes that would make a mother unfit if she is uncapable of putting her kids before drugs .
Abuse, neglect, or incapability.
Unfit for duty usually means the person has a medical problem, moral issue, credibility issue or attitude issue that makes them incapable of performing their job at the moment.
Being a unfit parent and/or give up your parental rights or have them taken away, is usually not something that means you get out of paying child support.
Because they felt that he was unfit to rule because of the bad living standards
Saturn is in space and has no fluid or solid land known or whatsoever.