Nitrification is the biological oxidation of ammonia or ammonium to nitrite followed by the oxidation of the nitrite to nitrate. The transformation of ammonia to nitrite is usually the rate limiting step of nitrification. Nitrification is an important step in the nitrogen cycle in soil. Nitrification is an aerobic process performed by small groups of autotrophic bacteria and archaea. This process was discovered by the Russian microbiologist Sergei Winogradsky.
Glen Anthony Rice (born May 28, 1967, in Flint, Michigan) is a retired American professional basketball player of the NBA. The 6'8 tall Rice was a three-time NBA All-Star guard/forward, ranking 8th in NBA history with 1,559 three-point field goals made during his 15-year career.
Condoleezza Condi Rice (/ËkÉndÉËliËzÉ/ ; born November 14, 1954) is an American political scientist and diplomat. She served as the 66th United States Secretary of State, and was the second person to hold that office in the administration of President George W. Bush.