Why Do We Want to Preserve the Wild Varieties of Certain

question 32

Essay

Why do we want to preserve the wild varieties of certain crops when these varieties have poor crop yields compared with modern crops?

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Definitions:

Pterygium

A benign growth of the conjunctiva that extends over the cornea, often associated with prolonged exposure to sunlight.

Optic Disc

The point in the eye where the optic nerve meets the retina, appearing as a small, circular area.

Pigmented Crescents

Darkened, crescent-shaped areas often found at the margin of the optic disc in the human eye.

Macula

A small central area of the retina responsible for sharp, detailed vision, particularly critical for tasks like reading and driving.