When light enters the eye through the pupil , that light falls on the retina.
Humans use both eyes to see a single image.
Humans use light to see an image.
What do humans use to see an image?
(A) keratin
(B) light
(C) heat
(D) fibers
(E) calcite
(F) mussels
(G) photons
(H) Neuron.