The two main types are DNA and RNA
The level most commonly meant by the term biodiversity is the species level.
Answer:
That would be option D. A motor.
Explanation:
The correct answer among the choices provided is option A. Lung capillaries are responsible for exchanging carbon dioxide for oxygen from the air. Blood that comes from the heart gets oxygen from the alveoli. The carbon dioxide in the blood goes into the alveoli at the same time.
