Answer:
D. astigmatism
Explanation:
Astigmatism is an imperfection in the curvature of the eye. Most of the focusing power in the eye occurs along the frontal surface called the cornea. The next structure involved in focusing is the lens, which lies behind the iris inside the eye.
The ideal cornea has a symmetrically curved surface, like a basketball. Astigmatism is caused by a cornea or lens with a curve that is not symmetrical. As a result, people with astigmatism may have distorted or blurred vision.
Astigmatism can occur in families and in most cases is associated with other refractive problems such as nearsightedness or farsightedness. It may also increase over time due to age.
Answer:
gene
Explanation:
the genes that code for protein are made up of tri-nucleotide units called condons
D
The following could cause the relative humidity of an air mass to change;
- a change in its pressure
- a change in its water vapor content
- a change in its temperature
Explanation:
An increase in temperatures of an air mass means that it can acommodate more moisture. Therefore, if it retains its initial moisture content, its relative humidity will have lowered.
If an air mass gets more moisture content at its temperature, its relative humidity increases.
When the pressure of an air mass is increased (while holding its initial moisture content), its relative humidity increases because with increased pressure there’s a decrease in the moisture content it can accommodate.
Learn More:
For more on relative humidity check out;
brainly.com/question/3171652
brainly.com/question/13325518
#LearnWithBrainly