Free help with homework

Why join Brainly?

  • ask questions about your assignment
  • get answers with explanations
  • find similar questions


When respiratory takes place,oxygen needs to be transported to all the body and for the deoxygenated blood to be cleaned.The heart cleans that blood as well as transport the oxygen and the cleaned oxygenated blood.
0 0 0
The Brain
  • The Brain
  • Helper
Not sure about the answer?
Learn more with Brainly!
Having trouble with your homework?
Get free help!
  • 80% of questions are answered in under 10 minutes
  • Answers come with explanations, so that you can learn
  • Answer quality is ensured by our experts