However, they are absorbed, usually as methyl mercury, by algae at the start of the food chain. This algae is then eaten by fish and other organisms higher in the food chain. Fish efficiently absorb methyl mercury, but excrete it very slowly. Methyl mercury is not soluble and therefore not excreted.
For example, a 10- to 15-minute brisk walk typically elevates the heart rate to 110 to 120 beats per minute. Also, the sinus node increases the heart rate when the body is stressed because of illness. In all of these circumstances, the heart rate increase is a normal response. Likewise, the sinus node signals the heart to slow down during rest or relaxation.
When you exercise your heart rate increases so that you can increase your breathing rate which allows you to take in more oxygen and transfer it into the blood.es, it does make your heart rate increase because spicy food increases metabolism in your body and also amount of heat in your body causes blood to circulate faster, therefor â¦ e heart rate increases.