The fuel responsible for the circulation of blood is oxygen.
It is very important for blood circulation to occur in the body. This is very essential so that all the cells and organisms are sufficiently funded with enough oxygen that is needed for them to function properly.
The fuel which enables proper amount of blood to spread/circulate round the body is oxygen. Oxygen is required during cellular respiration to break down sugar which then leads to the production of carbon dioxide and then releases energy for the body to work well.
Please see the link below for more information
https://brainly.com/question/12589893?referrer=searchResults
