Seismic stations consist of a seismometer for sensing ground motion, a clock for determining time, and a recorder for collecting data of earthquakes. They detect and measure Earth's ground motion.
The seismic stations collect data that is related to the natural movement of the ground which is also called 'tremor'.
<u>Explanation:</u>
Seismic Stations are dedicated centers where the natural movements of ground are recorded on a seismograph (an equipment specially designed to trace the intensity of the earthquake).
These stations are equipped with the required tools and technology to determine the hypo-center or the seismic focus of an earthquake which is usually deep below the Earth's surface.
The correct answer is : D. Pleistocene epoch The Pleistocene epoch lasted from about 2,500,000 years ago to 11,700 years ago. In this era, a lot of repeated glaciations happened on earth, since most of Earth's geographical surface is covered in Ice.
