Fossil fuels are made from the remains of ancient organisms that were buried under many layers of sediment millions of years ago. With increased heat and pressure, fossils are turned into fossil fuels. Fossil fuels are found in sedimentary rock, which is often located beneath a body or former body of water such as an ocean or swamp. Fossil fuels are nonrenewable resources that include oil, natural gas, and coal.
Definition of Aquarius for English Language Learners. : 1  the 11th sign of the zodiac that comes between Capricorn and Pisces and is symbolized by a person carrying a jug of water. : 2  a person born under the sign Aquarius : a person born between January 20th and February 18th.
For other uses with the term Aquarius, see Aquarius (disambiguation). The Age of Aquarius redirects here. For the song, see Aquarius/Let the Sunshine In. Age of Aquarius is an astrological term denoting either the current or forthcoming astrological age, depending on the method of calculation. Astrologers maintain that an astrological age is a product of the earth's slow precessional rotation and lasts for 2,160 years, on average (26,000-year period of precession / 12 zodiac signs = 2,160 years).