I think this is ether b. Trait or C. Allele, pretty sure it’s allele though. Good luck!
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.
Skunks are a rather interesting and well known animal. Skunks when concerned by prospective predators sprays a substance with a foul odor from it rear glands. This is a example of chemical warfare on the part of the skunk.
Eukaryotic kingdoms:animilia (metazoa), plantae,Fungi and PROTISTA
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Carbon dating the fossils or researching when animals like that lived
In column one or three it’s a sea shell
Hope it helps:)
