they have a seruis desiaese called yo need to listen better to your teacher
because sponges provide nutrition for the animals, they are clever and know this.
Some sponges protect themselves and they don't even know it. Those sponges protect themselves by a hard outer layer of skin.
I found an interesting article on WIKIPEDIA about sponges, it is very interesting but does not mention as to if sponges have brains or not. http://en.wikipedia.org/wiki/Sea_sponge
sponges are made up of individual cells. I dont know about colentrates. They just are what they are. sponges also don't move while coelenterates do.
i dont think i know ... :P
I only know of one. Bob Squarepants.
I don't know if this will help, but I'm guessing in the ocean...
Not very much
No, sea sponges are not decomposers. Sponges are filter feeders.
no sponges are not unicellular.
no sponges do not have bones
No, sponges are not parasitic.