The heart rate would decrease because there is less oxygen being supplied to the cells for cellular respiration, and also your muscles won't get the blood it needs. Blood also contains oxygen and glucose which cells need to convert food to energy and to survive, so if the cells don't get blood they will die which will eventually kill the organism
<span>the part of science that deals with microorganisms</span>
Wheres the picture for this
Earths elliptical orbit around the sun with winter occurring when the earth is far away from the sun and summer is closest to it how ever our planets distance from the sun has a little effect on the onset of seasons
hope this makes sense if not just message me and ill try to put it in a more understanding way :)