Question

is the group of words in bold a phrase or a clause? although both species are casually classified as \big cats,\ lions are mostly nocturnal predators that hunt together, whereas cheetahs are diurnal predators that hunt alone. phrase clause

Explanation:

A clause has a subject - "lions" and a predicate - "are mostly nocturnal predators that hunt together". A phrase lacks a subject - predicate combination.

Answer:

clause