The Census' official definition of money income excludes food stamps and the EITC, for example, while CBO includes it. Between 1979 and 2011, gross median household income, adjusted for inflation, rose from $59,400 to $75,200, or 26.5%. This compares with the Census' growth of 10%.
It takes a long time for the tiny coral polyps to create an entire reef. Coral formations grow an average of 1 to 8 inches per year. While ancestors of today's coral date back 240 million years, today's reefs began growing more than 50 million years ago, although most reefs are about 5,000 to 10,000 years old.oral Types. Coral comes in two types -- hard corals and soft corals. Hard corals grow in colonies and are responsible for the unique rock-like formations associated with coral reefs. Soft corals look like plants.
A coral reef is like a sea rainforest. Corals are colonies made up of polyps, small animals with a maximum diameter of 2.5 cm (1 in). The soft polyp is linked to its neighbor through living tissue covered by mucus.During the day, the corals look like stones, because the polyps retire into their skeletons.here are about 350 species of reef making corals, amazing through shapes, sizes and colors. The coral branches may take various shapes, from moose or deer antlers, to trees, columns, tables, umbrella, mushrooms, as their names suggest.