Your udgment is the answer
Option B is the correct answer.
Increased cardiorespiratory fitness
means the body makes more efficient use of oxygen requiring less to
function as well or better than when you are less fit as judged on this
index.
The benefit of the circuit of fetal blood course through the ductus arteriosus is the ductus arteriosus will permit more blood to go to the placenta and sidestep the lungs (since there is no blood required there yet). I hope the answer will help you.
cells have many structures inside of them called organelles. these organelles are like the organs in a human and they help the cell stay alive. each organelle has it's own specific function to help the cell survive. the nucleus of a eukaryotic cell directs the cell's activities and stores DNA.
