It's always found in an Arctic environment (3)
I believe the answer is:
ice
'it's always' is the definition.
I can't judge whether this defines the answer.
'in an arctic environment' is the wordplay.
'in' says the answer is hidden in the clue.
'ICE' is hidden in the letters of 'arctic environment'.
'found' acts as a link.
Can you help me to learn more?
(Other definitions for ice that I've seen before include "Decorate with frosting" , "Cool down" , "Form of water" , "Top cake" , "engine" .)