Near sightedness is a condition whereby the eyeball is too long or cornea has excess curvature such that light entering the eye is focused in front of the retina rather on the retina itself.
The exact cause of nearsightedness is unknown but there are two factors that may be responsible for its development.
1. Visual stress
2. Heredity
Individuals who spend considerable time reading or working at a computer or engage in other types of intense close visual work may develop nearsightedness.
There is credible evidence that many people inherit nearsightedness or are at least predisposed to the condition, especially if both parents suffer from the condition.
Far sightedness (hyperopia) is a condition where the eye is shorter than normal, the cornea is not curved quite enough or the lens sits further back in the eye than is normal.
This condition can be inherited especially if both parents suffer from it.
The other cause is through diseases like diabetes or glaucoma.
Answer:
1) The food pyramid can't force Americans to make healthy choices but it encourages them to choose fruits and vegetables, along with lean protein, as the main part of their diet.
2) It emphasizes the need to reduce the amount of sugar and fats by putting those at the top of the pyramid, which is the smallest serving size you are supposed to consume each day.
3) It helps people see the importance of balance in their diet. We shouldn't eat all carbohydrates like bread or french fries, but also, just eating fruit or just eating salad wouldn't be healthy either. We need a variety of different foods from the food groups, in proportions that are represented by the food pyramid.
Explanation:
C. Nodding to let your parents know u understand their request
Answer:
Hypothermia is caused by prolonged exposures to very cold temperatures. When exposed to cold temperatures, your body begins to lose heat faster than it's produced. Lengthy exposures will eventually use up your body's stored energy, which leads to lower body temperature. so like if u get stuck outside and no way inside sum where u will get hypothermia and the same thing that can be created on this is frostbite also.What can cause hypothermia? Hypothermia can occur when you are exposed to cold air, water, wind, or rain. Your body temperature can drop to a low level at temperatures of 50°F (10°C) or higher in wet and windy weather, or if you are in 60°F (16°C) to 70°F (21°C) water.
Explanation: