Bivalves are protostomes, as they belong the to phyla Protostomia. They are freshwater/marine molluscs, whose body is covered by a protecting shell. They do not have a head, and some of their examples include oysters, clams, mussels etc.
Answer:
365 1/4 times
Explanation:
Earth rotates 365 1/4 times
Specialised cells I think
Answer:when present - positive
When absent - negative
