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 contains a subject and a predicate (a verb or verb phrase). The bolded group "lions are mostly nocturnal predators" has the subject "lions" and the predicate "are mostly nocturnal predators", so it is a clause. A phrase lacks a subject - predicate structure.

Answer:

clause