Answer: Pastoral nomads
Explanation: Pastoral nomads are producers of food, and the size of their tribal or ethnic units increases accordingly. These groups raise livestock, and they move about within their established territory to find good pastures for their animals.
I believe your answer to be limestone, good sir.
1. Igneous Rock
2. Metamorphic Rock
3. Sedimentary Rock
When rising convection current of magma occurs and push the plate apart.
hope it helps~
