WHAT HOMEOSTASIS IS AND WHY IS IT IMPORTANT?

The environment (surrounding) of a living organismis always changing. Think about your own environment. The temperature of the air around you changes. For example,if you live in a temperate country, it might be -10 degree Celsius outside on a cold day in winter, and 23 degree Celsius indoors. If you live in a tropics, the outside temperature may be well over 40 degree Celsius.
       The cells inside your body, however, do not have a changing environment inside you almost the same, all the time. In the tissue fluid surrounding your cells, the temperature and amount of water are kept almost constant. So is the concentration of glucose. Keeping this environment constant is called homeostasis. 
        
        Homeostasis is very important. It helps your cells to work as efficiently as possible. Keeping a constant temperature of around 37 degree Celsius helps helps enzymes to work at the optimum rate. Keeping a constant amount of water means that your cells are not damaged by absorbing or losing too much of water by osmosis. Keeping a constant concentration of glucose means that there is always enough fuel for respiration.

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