User: The greenhouse effect is a result of A. absorption and radiation of energy in the hydrosphere. B. consumption of fruits and vegetables that produce a biofuel. C. absorption and radiation of energy in the atmosphere.
A principal focus or focal point is a special focus: 1  For a lens, or a spherical or parabolic mirror, it is a point onto which collimated light parallel to the axis is focused. Since light can pass through a lens in either direction, a lens has two focal pointsâone on each side.
Focus refers to the main point of your statement. Sometimes it is called a theme. Most of what you say in your statement will contribute to supporting your focus. In the very broadest sense, the focus of all medical school personal statements is Why I Should Be Accepted to Medical School,. However, you need to choose something a little more subtle and personal to make a positive impression.