Ventilation systems are needed in a <span>multicellular organism to actually obtain oxygen and give out carbon dioxide. Without this ventilation system, it would be very difficult for multicellular organisms to survive. It has been also observed that surface diffusion is not enough for a multicellular organism to breath.</span>
Can somebody translate it to English please
Answer:
Repetitive DNA segments: transposable elements.
I hope it helps.
The answer is , because one cell divides to form two identical cells.
