According to the law of superposition, how are sedimentary rock layers deposited?
with the oldest on top
with the youngest on top
in horizontal beds of the same age
at the same time and later folded by tectonics

I think it is with the oldest of the top

When a virus infects a host cell, it uses the cell's machinery to make copies of its own genetic material in a process called replication. finally, during the process of self-assembly, that protein shell and the copies of the virus's genetic material are assembled into new viruses.