Some of them are predators, most starfish are, they eat slow moving creatures like barnacles or clams
A few filter feed
And some eat algae scraped off of rocks
Hope that helped
yes The digestive system of annelids consists of an unsegmented gut that runs through the middle of the body from the mouth, located on the underside of the head, to the anus, which is on the pygidium.
Echinodermates possess a water vascular system.
A digestive system with only one opening is called an incomplete digestive tract. Organisms with this type of digestive system ingest food and eject waste through their mouth.
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The type of medical doctor that specializes in the digestive system is called a gastroenterologist. he also deals with gastrology
A horse has a monogastric digestive system, meaning it has a single-chambered stomach similar to humans.
echinoderms.
Yes, a cow's digestive system involves chemistry. The digestive processes of all animals involve some type of chemical digestion.
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digestive system
water vascular system