Question

what will happen if the respiratory and circulatory systems fail to transport nutrients,gases,and other molecules​

Answer 1

Answer:

Then your blood becomes useless.

Explanation:

The blood in your body contains many hemoglobin which contains iron. Iron carries oxygen around your body, and keeps strength in you to continue to live. If the respiratory systems fail, and they cannot transport these nutrients, gases, and other molecules​, your blood will directly be influenced, which means you will most likely die.