Question

.
2. A hard crystalline form of limestone.
3. down below the surface​

Answer 1

Answer:

Gypsum.

Explanation:

it's easy gypsum is made

with limestone.

Answer 2

Answer:

carboniferous limestone

Caches of limestone from different locations can possess different hardness scores. F.G. Bell reported in the "Bulletin of Engineering, Geology, and the Environment" that carboniferous limestone consistently rated as harder and stronger than magnesian limestone, inferior oolitic limestone and great oolitic limestone.

2. The Earth is an enormous place. There is so much that we don’t yet know about what happens on the surface of the Earth, so how could we possibly know about what happens deep down below the Earth’s surface? Scientists are still working out some of the details, but with the help of equipment used when studying earthquakes, they know the Earth is made up of layers.

The crust , The core , The mantle

Explanation:

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