Medical Quiz
Eye and Ear Quiz

For clear vision, an image must be focused exactly on the ________________.

A. retina

B. pupil

C. optic nerve

D. lens

Select your answer:
A  B  C  D  E 


Epidemiology Tenses Anatomy Bone Cell Theory Environment Nervous System/Endocrine System Genetics: Viruses and Bacteria Nutrients in Food Physical Fitness Components Disease & Immunity The Energy Nutrients Tissues Vocabulary 5 Major Food Groups Surgical Nutrition

Other quiz: Sexual Reproduction

Which of the following helps a species adapt to a changing environment?

A. Having fewer offspring

B. Having more offspring

C. Decreasing genetic variation

D. Increasing genetic variation