Why is the percentage of nitrogen inhaled and exhaled the same?

The rapid decomposition of organic matter produces evidence which supports: the slow accumulation of coal deposits long ages of the earth rapid burial of vast amounts of vegetation biblical account of noah's flood

Explain how sequences of amino acids in proteins can be used to reveal relationships among organisms.

Which process in respiration happens first? a)pyruvate processing b)electron transport chain c)krebs cycle d)glycolysis