Answer: The P wave indicates atrial depolarization. The P wave occurs when the sinus node, also known as the sinoatrial node, creates an action potential that depolarizes the atria. The P wave should be upright in lead II if the action potential is originating from the SA node.
Explanation:
The pre-teen years occur during the juvenile <span>stage, from 9 to 11 years of age.</span>
In photosynthesis of plants, the light gives energy to
the electrons moving through the electron transport chain. This Light energy is then converted to chemical energy, which
produces ATP; an energy storage molecule and NADPH, a reduced electron carrier.
Moreover, <span>light energy is used to pump protons across a membrane to
produce a proton-motive force.</span>
Explanation:
A model is used to help scientists visualise things that they cannot actually see. It can be thought of as a thinking tool, to help form explanations. Models are useful simplifications to aid understanding. ... It can then be used to explain further phenomena and to make predictions of future behaviour.
