What lives and grows in a region - from Africa to Iberia - keeled over (5)
I believe the answer is:
biota
'what lives and grows in a region' is the definition.
(term for the life in a particular region)
'from africa to iberia keeled over' is the wordplay.
'from' says the answer is hidden in the clue.
'keeled over' says the letters should be written backwards.
'atoib' can be found hidden inside 'africa to iberia'.
'atoib' backwards is 'BIOTA'.
(Other definitions for biota that I've seen before include "The animal and plant life of a region or period" , "Animal and plant life in an area" , "Region's creatures, plants" .)