Biology

IV because it is the largest organism in the diagram

IV because it is the organism that receives the highest amount of sunlight

I because it uses sunlight to manufacture food

I because it contains the least amount of energy

Sand and clay

loam and sand

silt and sand

silt and clay

appendicular skeleton

axial skeleton

axis vertebrae

cervical vertebrae

Clavicle, tongue and pelvis

Eye, cerebellum and ear

Ear, brain and hinge joint

Lumbar, eye and teeth

II-III-I-IV

I-IV-III - II

I-II-III-IV

IV-III-II - I.