Limited resources on the galapagos islands result in?

Are their any answer choices? If this is referring to the Evolutionary basis of Charles Darwin’s work on Beaks than limited resources would result in a change or a development of new anatomical features such as a change in beaks or complete extinction of species as a whole

Answer;

- P-R interval

Explanation;

-P-R interval is the period of time from the onset of the P wave to the beginning of the QRS complex . This period normally ranges from 0.12 to 0.20 seconds in duration.

-The P-R interval represents the time between the onset of atrial depolarization and the onset of ventricular depolarization. A prolonged PR interval indicates delayed conduction of the sino-atrial, or SA, nodal impulse to the ventricles and is called first-degree AV block. A short PR interval can be seen when the AV node delay is bypassed.