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1. These
are
flattened, elongated,
wormlike
animals
with
definite
head
region.
A
E
M​


Sagot :

Answer:

Sea cucumbers

Explanation:

Im not sure tho

Flatworms

Explanation:

Flatworm, also called platyhelminth, any of the phylum Platyhelminthes, a group of soft-bodied, usually much flattened invertebrates.