What is a member of a large group of animals that have three body sections, six legs, cold blood and an external skeleton called?

cold-blooded I think

Explanation:

there are no options provided but you can choose among the following gender-neutral pronouns: zir, hir, eir, vis, tem, eir.

in the normal course of maintaining a pronoun-antecedent agreement, we could have used the words his or her but since we are also required to use gender-neutral language, we need to replace it with its equivalent gender-neutral pronoun.

no because it could make the world a terrible place to live in.