I believe the answer is theoretical model
A theoretical model is the foundation that could be held to support a certain theory for a certain research or study.
From the example above, the study is build on a foundation that both behavior and environmental factor could affect the subjects' overall health
Not sure.. i think maybe lots of people grow....stuff there
<span>The examples of third gender demonstrates how in different cultures everything is not strictly male or female and that there can be some fluidity in gender classification and identification.</span>
Answer: Donna is experiencing Blurred visions because of inability to get proper Medical care from Physicians. Also she probably has diabetes too.
Explanation: Blurred vision can occur by simply forgetting to wear your prescribed corrective lenses. But in many cases, it is usually a sign of an underlying eye disease.
Eye diseases include:
Age-related macular degeneration
Glaucoma
High blood sugar levels
Other causes of blurry vision include:
Cataracts and other eye conditions such as conjunctivitis, dry eye syndromen, and retinal detachment
Certain medications (including cortisone, some antidepressants and some heart medications)
Diabetes mellitus
Stroke
Migraines
