Which two subatomic particles make up the atomic mass

Joan writes four numbers on the board in standard form, and then she writes their scientific notation

Take a look at this dandelion. the yellow flower on the right is pollinated and the seeds on the left are transported by

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.