You generally need to work for 10 years to qualify for benefits (unless youâre receiving benefits through a spouse -- see How Spouses Can Maximize Social Security Benefits for more information). The maximum earnings that count toward your benefit are $118,500 in 2015.
Chlorophyll (also chlorophyl) is a term used for several closely related green pigments found in cyanobacteria and the chloroplasts of algae and plants.Its name is derived from the Greek words ÏÎ»ÏÏÏÏ, chloros (green) and ÏÏÎ»Î»Î¿Î½, phyllon (leaf).n these complexes, chlorophyll serves two primary functions. The function of the vast majority of chlorophyll (up to several hundred molecules per photosystem) is to absorb light and transfer that light energy by resonance energy transfer to a specific chlorophyll pair in the reaction center of the photosystems.
Chlorophyll absorbs certain wavelengths of light within the visible light spectrum. As shown in detail in the absorption spectra, chlorophyll absorbs light in the red (long wavelength) and the blue (short wavelength) regions of the visible light spectrum.Green light is not absorbed but reflected, making the plant appear green. Chlorophyll is found in the chloroplasts of plants.There are various types of chlorophyll structures, but plants contain chlorophyll a and b. These two types of chlorophyll differ only slightly, in the composition of a single side chain.hlorophyll occurs in a variety of forms. The structure of chlorophyll a. Chlorophyll does not contain chlorine as the name might suggest; the chloro-portion stems from the Greek chloros, which means yellowish green. The element chlorine derives its name from the same source, being a yellowish-green gas.