When reproducing a plant by you can use the stem, root, or leaf. layering cutting grafting?

When reproducing a plant by cutting, you can use the stem, root , or leaf,

In cutting method, we can cut a part of plant's stem, root, or leaf and plant it on a medium.
If the growing conditions are fulfilled, that piece will grow into another plant.

hope this helps

Yes experiencing a muscle fatigue is a way  for the body to maintain the body temperature because whensoever the body is running out of breath because of exercise then the oxygen requirement of the body is 15-20 times more because of this there is a increase in body temperature and as a result of this body starts sweating and this sweating results in cooling down the body temperature.This process of regulating the body temperature is called homeostasis. Muscle fatigue is caused due to deposition of lactic acid in muscles that leads to pain in muscles and this is caused when anaerobic respiration starts due to lack of oxygen.