Select your answer:
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Population Ecology Environment Neurology Thyroid Disease Anatomy: Muscle Pathophysiology_Endocrine Endocrine System Disorders Human Muscle DNA Excretion Cardiovascular System Terminology BIOMEDICAL MCQ Macro and Micro Nutrients Blood and Bones Sensory System Key TermsOther quiz:
Organisms › ViewWhat are the two main groups of vertebrates?
A. Mammals, birds, and fish
B. Dinosaurs, reptiles, and amphibians
C. Reptiles, amphibians, and insects
D. Plants, fungi, and bacteria
How the Eyes work › View
Which controls the amount of light entering the eyes. It also give the eye its color?
A. lens
B. retina
C. Iris
D. cornea