Answer:
D. The filling and swelling of the magma chambers below the crater on the island of hawaii.
Explanation:
- The magma chambers is a large pool of liquid rocks that are found beneath the surface of the earth and such a chamber is formed under great pressure and this pressure gradually fractures the rocks around it.
Answer:
seven quintillion
Explanation:
or 5 hundred quadrillion grains
7.5x10^18