Answer:
Answer:
Anatomically this is because there are no neurons or blood vessels covering the cones.
Explanation:
Fovea centralis and its containing cones cell is surrounded by the macula lutea to form a depression or pit in the retina. The abundant cones cells provide high visual acuity characteristic of the fovea.
In addition an area in the fovea of no blood cells called fovea avascular zone allows light rays to be focused on the fovea, with less scattering,this minimises the losses of incident lights on the fovea, and therefore reception of maximum light rays from objects for acute vision.
Therefore the presence of abundant cones cells in the fovea together with the presence of fovea avascular (area with no blood cells)which reduces dispersion of light rays for maximum receptions are responsible for high visual acuity of the fovea.
This explains the reasons why fovea is refereed to as the center for primary vision or fovea vision where high degree of visual activity is needed such as focusing with microscope, reading,knitting and driving
Explanation:
Answer:
an increase in red blood cells an increase in red blood cells
Explanation:
Answer:
Student's t-test
Explanation:
The student's t-test is used to compare, measure or evaluate two independent groups. It helps to show the significant differences between two groups that are significantly different from each other, in this case, the two immersive learning treatments. It helps to measure if the differences which is usually measured in mean, happened by chance.
It is the most appropriate method for comparing two groups with a continuous variable. Forms of Student's t-test are the paired t-test, unpaired t-test, single sample, etc.
The correct answer is:
<h3>C. Avoiding Travel Vaccinations</h3><h3>Explanation:</h3>
It is important because the Centers for Disease Control and Prevention suggests that all passengers six months of age or older should be injected. It's best to register a vacation well before you go on your journeys. A vaccine before the journey can limit the infection.Whereas eating uncooked food and other cannot cause severe infections.
<span>The answer is C. Natural barriers safeguard the body against life forms that can bring about the disease. Characteristic boundaries incorporate the skin, mucous films, tears, earwax, bodily fluid, and stomach corrosive. Likewise, the typical stream of pee washes out microorganisms that enter the urinary tract.</span>
