In the United States, the Bureau of Labor Statistics computes the consumer price index which is used to find inflation rates. The bureau states that the consumer price index âis a measure of the average change over time in the prices paid by urban consumers for a market basket of consumer goods and services.â.
The earth ulis called a blue planet because of the presence of abundance of water in it. About 70 percent of the earth's crust is covered with water. And this imparts it with a blue colour as seen from the space.
Why are these planets called gas giants and ice giants? The name âgas giantâ was coined in 1952 by science fiction writer James Blish to refer to all the giant planets. The four giant planets are huge gas balls, which is quite different than Earth and and other three rocky inner planets. Gas giants are primarily composed of gases, such as hydrogen and helium, and a much thicker layer of metallic hydrogen, along with a molten rocky core. Unlike rocky planets, gas giants do not have a well-defined surface, and there is no clear boundary between where the atmosphere ends and the surface begins.