Astudent went out to the school track and walked two laps, ran two laps, and then walked two more laps. on the grid below, draw a line that shows what most likely happened to the pulse rate of the student during these activities

During physical effort, more blood is needed, so more blood circulates through your body, meaning the pulse will get higher.

During the period where he was still and started walking, the pulse increased, and the same happened during the period where he was walking and started running. When he started walking normally again, his pulse decreased and slowly regulated.

Hope it helped,

BioTeacher101

(If you have any questions, feel free to ask them in the comments)

they deliver oxygen to the blood