What describes the principle of superposition

When we discuss superposition in biology term then its principle tells that one by one rocks or sediments settles.The superposition mean that the older rocks or sediments place below all newly coming sediments or rocks place on first layer so layer over layer formation is called superposition.

the second type of galaxy is called a barred spiral, which has a thing called a bar straddling the nucleus

c. the initial amount of money placed in the savings account