<span>well transportation is onne because there are trains that use magentic levation
</span>÷β
Oh this is easy.
Astronomy is the branch
The main responsible for the delay among the atrial and
ventricular contractions is the action potential conduction velocity of the AV
node cells. If the atria and ventricles contract simultaneously, atria cannot
give any help in filling the ventricles, which is needed, especially in those
with stiff ventricles as in the elderly. Hence atria have to contract first and
then the ventricles.
DNA Ligase enzyme.
Hope i helped! Please mark Brainliest if u can :)
Kinda confused by the question but Answer C sounds right.
Hope I’m not wrong! :)
