This is an example of a closed system
C. Televised images of bodies of US troops dragged through Somalia’s capital city.
Gondwana<span> was an ancient supercontinent that broke up about 180 million years ago.</span>
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.
Hope this helps!
