Please Please answer this. What do these two changes have in common? - melting wax
- rain forming in a cloud

Both are only physical changes
Both are chemical changes
both are caused by heating
both are caused by cooling

In november 1987, a massive iceberg broke loose from the antartic ice mass and floated free in the ocean. the chunk of ice was estimated to be 98 mi long, 25 mi wide, and 750 ft thick. a typical backyard swimming pool contains about 24,000 gallons of water. how many of these pools could you fill from the water in this iceberg? (assume the iceberg is a rectangular solid of the above dimensions and consists of water only). express answer in scientific notation.