Answer:
Particular focus on a person's life
I'm pretty sure the answer is B, but don't hate me if I'm wrong
Seismograph's drum feel the seismic waves. There is a weight that moves the pen so that when the seismic waves are felt, the pen jiggles and records it on paper.
Answer:
if your question is what do we need to survive like the requirements, it would literately be every organ you have with food and water. you also need blood and a nervous system.
Explanation:
They begin as streams in mountains or hills
