adj.
VERBS
▪ be , seem
▪ become
ADVERB
▪ extremely , fairly , very , etc.
▪ highly , widely
▪
Polar habitats are harsh and highly ~.
▪ infinitely
▪
These systems are infinitely ~.
PREPOSITION
▪ in
▪
~ in shape
Variable is used with these nouns: ↑ cost , ↑ degree , ↑ quality , ↑ rate