PLEASE HELP!! how does nitrogen travel through atmosphere, biosphere, geosphere. NITROGEN GAS, AMMONIA, NITRIFYING BACTERIA, and LIGHTNING should be used in the summary.

Explanation: Nitrogen cycles through the biosphere through what is known as the nitrogen cycle. The major changes nitrogen goes through are nitrogen fixation, nitrification, anammox, denitrification, and ammonification. ... In nitrification, NH3 is converted to nitrite by microbes known as ammonia-oxidizers

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image result for how many calories of energy will 20 grams of carbohydrates provide in one gram provides 4 calories

consuming the right balance of protein, carbohydrates and fat can you maintain a healthy weight and optimize your energy levels. protein and carbohydrates both contain 4 calories per gram, while fat provides 9 calories per gram.