Scope trained at this place where life can be observed (9)
I believe the answer is:
ecosphere
'where life can be observed' is the definition.
The definition suggests a singular noun which matches the answer.
'scope trained at this place' is the wordplay.
'trained' indicates anagramming the letters (to train can mean to grow something into a shape).
'at this place' becomes 'here' (here in this place).
'scope' with letters rearranged gives 'ecosp'.
'ecosp'+'here'='ECOSPHERE'
Can you help me to learn more?
(Other definitions for ecosphere that I've seen before include "Core sheep (anag.)" , "Region where life is possible" , "Parts of the earth where life can exist" , "Region of planet where life exists" .)