I am a small horse.Change one letter and I am a pool of water.Add one letter and I am a unit of weight.Change one letter and I am curved.Finally add one letter and I am the earth.What was I and what did I become?
well, i'm not a lady, imagcq.
i thought that you would have easily solved this one yourself and then i realised that you had actually devised it. i might try to set one later - i've stuff to prepare for tomorrow.