Lactic acid buildup when you’re exercising causes a build up of oxygen. Your body cannot break down glucose in the blood. So, your heart beat increases because there is more oxygen than normal needing to be pumped throughout the body.
In short terms: because your heart needs to pump more oxygen, it is pumping faster causing a faster heart rate.
The correct answer is D. 10%
Every living thing is made of up cells
Also umm we can’t see the image can you post it?
Fungi act as decomposers on dead plants and animals so they don't vlog everything up! Hope this helps.
