Comparisons of the aging theory scientist made by the scientist
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In the early age the scientist assumed that aging is the process in which the wear and tear of cells occurs and this results in the process of aging. When our body functions for longer period the cells tends to wear out due to the continuous usage for a longer period.
The rate of living theory assumes that how faster an organism consumes oxygen the quicker the cells wore out and result in aging process. There are also several other theories which discuss in brief about the aging process.
A phobia is an irrational fear of something that's unlikely to cause harm. The word itself comes from the Greek word phobos, which means fear or horror
Answer:
The digestive tract runs from the mouth to the anus. It looks like a lengthy muscular tube with digestive organs connected along the way, up to 10 meters long. The large intestine and, to a lesser extent, the remainder of the digestive system contain a significant reservoir of microorganisms, such as bacteria.
1) fatty will be the answer for your question!
