Which of these is a controllable risk to factor for disease
a. sexual behavior
b. climate
c. poverty
d. age

light rays enter the eye through the cornea, the clear front first understand how the eye enables us to see, and what role the cornea plays in eye at different angles, and do not focus on one point the retina, but on many we can tolerate very large scars on our bodies with no concern except for our vanity.

there are men and women, some choose to be both or change their gender. often times those people go by "other". those who change their gender are known as "transgender"