<span>Lungs take in air, and diffuse (absorb) air into the capillaries of the blood. However, this process is two steps, one for inhalation and one for exhalation. Diffusion takes place in both processes, and serves different purposes. One is to absorb oxygen, the other is to rid co2.</span>
Answer:
D)They both contain carbon, but only nucleic acids contain phosphorous.
The element is Manganese. Period I believe is boiling point and group is melting point.