The answer is a seismograph
Answer:
The Crust is mostly made up of loose materials.
The Mantle is made of up of a thick solid rock substance.
The Outer Core is made of super heated liquid molten lava.
The Inner Core is believed to be solid ball of mostly iron, and nickel.
Explanation:
Answer:
It allowed land-grant colleges to perform experiments in the fields of rural farms.
Explanation:
