A. Duplication is one of the different types of chromosomal mutations.
B, proton is positive and it does not represent the symbol
Answer:
4.Cell wall protects the cell whiles organelles are found in the cell itself which is having the cell wall
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.
