We Cannot Exist Without Them! QQ...

As if any of you failed to notice. Our human body is inhabited by millions of living bateria microscopic organisms, most of which are not pernicious in nature. In fact many of them are important for the heathful functioning of the human body. You can't see them with your naked eye. But can you believe this statement, "without bacteria, life on earth would be impossible." Why? Because Life depends on [nitrogen] fixing bacteria to bring [nitrogen] out of the atmosphere for use in living things. However many bacteria when out of balance cause death and illiness in humans. So bacteria affect humans in both good and bad ways. Bacteria again are living organisms that [exist] all around and inside humans, these living microscopic organisms are all through our intestinal digestive system, etc. Believe it or not, but these living bacteria make up our body's immune system. Most bacteria are beneficial to our health. human-beings couldn't exist without such human microbiota as we are their hosts. Yes, as is this planet, Humans are covered with living microbiota. Btw.. bateria were the first life forms to appear on earth, and they will survive long after humans are gone. You can't see QQ... them but there are millions of them riding outside and inside your host body! We can't exist without them. Gfb easing on...

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