You can tell the difference because one deals with sugar and energy storage like lipids but lipids are fats or fatty acids like unsaturated and saturated fats the unsaturated fats are good for you and has the most energy source.
Pathogens and run off from factories, oil spills and host of other poisons are threatening these places
Doctors would let your body's immune system fight off a bacterial infection. If the infection gets worse, then the doctors would proscribe you with some antibiotics so it'll fight off the harmful bacteria.
What? I don’t understand what you are asking.....