What kind of a simple machine is an ax blade?

The buildup of sediments where a river empties into a slow-moving or nonmoving body of water is known as a/an

Jason adds the antibiotic penicillin to a bacterial culture. the bacteria develop genetic modifications in their genome, which gives them resistance to the antibiotic penicillin. what caused this genetic modification?

During binary fission, what events must occur before the cell splits into two new cells?