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Exhaled air contains a higher percentage of CO2 than inhaled air, due to it being a waste product of respiration. By breathing excess CO2 into the patient, the blood acidity will decrease and will be dete...

The years 1928-1964 were a time in which Russia as a nation, faced a total transformation. From changes in economic and political structure, to a complete shift in social order, most aspects of an average...

Both ser and estar mean 'to be', but they are used in different contexts.Ser is generally used for permanent states, including nationalities, genders and professions. It can als...

Il mio migliore amico si chiama Pietro. E' un ragazzo moro e alto. Ha gli occhi verdi e piccoli. Gli piace molto il calcio, tifa la Roma e non si perde mai una partita della sua squadra del cuore. Gli pia...

R=sqrt(42)=6.48...a=arcos(4/sqrt(42))=0.905...Rsin(x+a)=6.48sin(x+0.905)