Population is based on the de facto definition of population, which counts all residents regardless of legal status or citizenship--except for refugees not permanently settled in the country of asylum, who are generally considered part of the population of their country of origin.
The brain is made up of over 100 billion nerve cells with each brain cell connected to around 10,000 other cells, which equals around 1000 trillion connections in your brain. Your brain is actually very soft, jelly-like, and not grey but a deep red in color. The brain controls both involuntary, or lower, actions, such as heart rate, respiration, and digestion. Complex, or higher, mental activity, such as thought, reason, and abstraction, is consciously controlled.
The colors you see do not exist in the physical world! The physical world only has light of different wavelengths! Colors only exist in our brainâs model of the world! And there is just no reason why it would have to look so beautiful! Why the red had to look like RED, the yellow like YELLOW, the green like GREEN, the blue like BLUE etc.