Examlex
Astigmatism is due to too flat a cornea.
Senescence
The process of aging, whereby the body becomes less strong and efficient.
Smoking Cigarettes
Smoking cigarettes involves the inhalation of smoke generated by burning tobacco wrapped in paper, a practice known to have harmful health effects, including increased risk of cancer, heart disease, and respiratory problems.
Elderly Couples
Refers to pairs of individuals, typically partners or spouses, who are in the later stages of life, often considered to be those who are 65 years old or older.
Sex Life
The part of an individual's existence that relates to their sexual activities, preferences, and relationships.
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Q111: N rays do not exist.
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