convection currents in the atmospere
From the right atrium, blood will flow through the tricuspid valve into the right ventricle.
The answer to this is nucleic acids.
Being able to do high intensity cardio for more than 45 minutes
Opposing muscle groups are muscles that work together to perform an action, or just to move your body. They're also often referred to as antagonistic pairs. When carrying out a movement, one muscle contracts and the other lengthens to allow it all to happen
