Although temperatures have fluctuated throughout the earth's history, scientists are greatly concerned about the current warming because

This rate tends to be faster than in most other periods. The rates in previous eras was very gradual and did not have as much of a deleterious effect on the life that was present: today's rate is much more rapid and has the potential to do much more damage to the life on the planet.

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