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Paper currency or banknotes are pieces of paper that carry a payment promise for the currency written on them and which is payable to the bearer on demand. At the beginning, banknotes were issued by commercial banks that backed their value by holding reserves of gold and silver coins. Nowadays, its value is fiduciary, it is not backed by any physical good of the same value.
The development of paper currency by Song's dinasty meant a considerable improvement from merchants and traders at those times. Paper money was much easier to transport if compared to coins, both in terms of size and weight. Merchants could travel for a longer time carrying their profits with them on the way and became more efficient in their businesses.
Answer:
Smaller hippocampus
Explanation:
In general, the hippocampus of individuals with post-traumatic stress disorder (PTSD) is <u>smaller</u> than the hippocampus in individuals without PTSD. The hippocampus is located on each temporal lobe of the brain and is responsible for the regulation of motivation, emotion, learning, and memory. Scientist report that stress reduces the size of the hippocampus and individuals with PTSD have smaller hippocampus and prolonged exposure to stress will damage the hippocampus.
