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.
Confidence votes 3. It is well known that people who are colorblind have mutations in their genes that cause a loss of either red or green cones, and they therefore have a hard time distinguishing between colors. There are three kinds of cones in the human eye: red, green, and blue.ow researchers have discovered that some people with the gene mutation that causes colorblindness lose an entire set of color cones with no detriment to the acuity of their vision overall.