Which is the following is true about the properties of the mantle? The mantle produces magnetic fields.
The mantle is hotter the core.
The mantle contains two different layers.
There are rock samples collected from the mantle.

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.