Which of the following best explains why the atomic theory changed over the past 200 years?
New experiments led to revised ideas,
Few people believed it was correct.
The atomic model was incomplete.
The theory was terribly flawed

Ifound this information on google “yes. they have a mouth and brain at one end and an anus at the opposite end. what characteristics distinguish an annelid from other worms? annelids have segmented bodies and a coelem which is a tube filled with fluid and contains most of the organs.“ i hope it you