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.
   Great: The Great Barrier Reef is a large and vast coral reef: at  2000km long, it is the largest coral reef in the world.   Barrier: The Great Barrier Reef is a barrier reef. A barrier reef  is one which runs parallel to the shore, separated by a channel of  water.  Reef: The Great Barrier Reef is a coral reef.   When people say reef, they imply coral reef.. Corals, and other things like coralline algae, are what form reefs.     Corals are Cnidarians, the same ph â¦ ylum as anemones and jellyfish. Being a Cnidarian, a coral contains nematocysts to sting and capture prey in their tentacles.