Answer:
Water leaks into the ball, displacing the air pockets inside and increasing the ball's density.
Explanation:
Baseballs are made of layers of yarn and rubber, with a cork center and a leather cover. These are porous materials that hold pockets of air, so initially, the baseball floats. However, as water leaks in through the stitching, the air is displaced and water fills the baseball. Eventually, the density of the ball becomes greater than the density of the water, and the ball sinks.
