Which best explains why an iceberg floats? Water expands and becomes denser when it freezes. Water contracts and becomes denser when it freezes. Water expands and becomes less dense when it freezes. Water contracts and becomes less dense when it freezes.

Mrs. avila is buying a wallpaper border to go on all of her kitchen walls. she wants to buy 5 extra feet of wallpaper border than she needs to be sure she has enough. she buys 55.5 feet of the border. the store owner selling the border uses the width of mrs. avila's kitchen to determine that the length of her kitchen must be 14.5 feet.