A small wooden boat floats in a swimming pool, and the level of the water at the edge of the pool is marked. Consider the following situations and explain whether the level of the water will rise, fall, or stay the same.
(a) The boat is removed from the water.
(b) The boat in the water holds an iron anchor which is removed from the boat and placed on the shore.
(c) The iron anchor is removed from the boat and dropped in the pool.