Exo means outside
So planets outside our solar system
Do you need the definitions
Answer:
A option mantle is correct I guess
hope this helps u
Answer:Morphology and Physiology
Explanation:Morphology studies the form,structure and features of an organism this could include the shape,height,color etc while physiology help study the underlaying factor that gives rise to the ways its functions.
This two are key for a Biology to group an organism for when the morphology is know it is possible to classify such organism.