Your lungs take in air through the mouth and nose. Explain how the lungs function in the human body. They pass oxygen from the air into the blood.
They remove carbon dioxide from the air.
They pump the blood throughout the body.
They coordinate the movement of the heart.

What are the primary responsibilities of a chemical engineer involved in "r& d"? develop large scale manufacturing operations discover new products and processes training of new chemists determine products needed by consumers

How have the greenhouse gasses increased from the year 2000 to 2018

The content of manganese (mn) in steel was determined spectrophotometrically and with the use of the standard addition method. an unknown sample of mn from a digested steel sample gave an absorbance of 0.185 when analyzed spectrophotometrically. when 5.00 ml of solution containing 95.5 ppm mn was added to 50.0 ml of the unknown steel solution (digested sample), the absorbance was 0.248. calculate the concentration, in parts-per-million (ppm), of mn in the digested steel sample solution.