Speculate why a change in body temperature occurs?

Climate change and emotions sometimes
Also sickness
Hope this helps

Being in a warm environment, exercise, sickness

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