Ask Question
2 September, 04:43

The 30 trillion or so cells in your body require a continuous supply of oxygen and nutrients and an unending removal of waste materials. the blood carries these materials in the body's circulation within a series of closed tubes, called

+4
Answers (1)
  1. 2 September, 06:37
    0
    Sounds like Your cardiovascular system, the closed tubes must be your blood vessels, siencey term: your Angio, which means blood vesels
Know the Answer?
Not Sure About the Answer?
Get an answer to your question ✅ “The 30 trillion or so cells in your body require a continuous supply of oxygen and nutrients and an unending removal of waste materials. ...” in 📙 Biology if there is no answer or all answers are wrong, use a search bar and try to find the answer among similar questions.
Search for Other Answers