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.
The Control Point (CP) is a business activity put in place to ensure the actual business process is being executed in a controlled manner; or it is used to mitigate some type of risk (think futures trading in a brokerage firm) associated with the process. It is similar to an âActivityâ; however the metadata associated with it is somewhat different.