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 - verb combination, while a phrase does not. Without seeing the bolded part, we can't analyze it precisely. But if we assume the whole under - lined part "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" is being considered, it is a clause as it contains multiple subject - verb combinations like "species are", "lions are", "cheetahs are".

Answer:

clause