It must be durable and available
Answer:
may i know which subject does this question belong to.
Explanation:
The first invertebrates to show both segmentation and a complete digestive system belong to the phylum Annelida that includes earthworms, leech, sandworms, etc.
These segmented worms have complete digestive system which is also known as tube-within a tube. These can be found in freshwater, marine water or can even be terrestrial.
Most stinging cells or underground, like nests {glad to help}
