the answer is echinoderms are closer related to humans because they have a spine while mollusks do not
Yes but chimps are closer related.
Yes.
Arthropods are invertebrate animals such as crustaceans. An arthropod that is useful to humans is the lobster, as it can be eaten.
Crustaceans are eaten by humans.
Arthropods are important to humans and animals. It is the main food chain.
Snails and slugs are mollusks. Humans and mollusks have co-existed since humans emerged, and I would imagine humans have always been aware of the existence of mollusks. We're kind of smart like that.
The mandibles of arthropods open side to side. The jaws of humans open up and down.
Anthropods (humans) do not have wings; not to be confused with phylum Arthropoda (arthropods). Many arthropods have wings (insects are arthropods, including flying insects), but, of course, not all of them.
Mollusks are just smarter.
Yes, they may be smaller than humans but they are made of cells just like humans.
food << lobster is an arthropod