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The number of neuronal connections in the human brain (estimated at 10 14), or 100 trillion/100 T The Avogadro constant is the number of "elementary entities" (usually atoms or molecules) in one mole ; the number of atoms in 12 grams of carbon-12 – approximately 6.022 × 10 23 , or 602.2 sextillion/60.2Sx.
The Gini coefficient is a number between 0 and 1 or 100, where 0 represents perfect equality (everyone has the same income). Meanwhile, an index of 1 or 100 implies perfect inequality (one person has all the income, and everyone else has no income).
Migration can have a significant effect on population change. Global south–south migration accounts for 38% of total migration, and global south–north for 34%. [ 30 ] For example, the United Nations reports that during the period 2010–2020, fourteen countries will have seen a net inflow of more than one million migrants, while ten ...
The total fatalities figures comes from the WHO report (table A2, column point estimate, pp. 264–271) and are often an adjusted number of road traffic fatalities in order to reflect the different reporting and counting methods among the many countries (e.g., "a death after how many days since accident event is still counted as a road fatality?"
Elon Reeve Musk (/ ˈ iː l ɒ n / EE-lon; born June 28, 1971) is a businessman known for his key roles in Tesla, Inc., SpaceX, and Twitter (which he rebranded as X).Since 2025, he has been a senior advisor to United States president Donald Trump and de facto head of the Department of Government Efficiency (DOGE).
World map by inflation rate (consumer prices), 2023, according to World Bank This is the list of countries by inflation rate. The list includes sovereign states and self-governing dependent territories based upon the ISO standard ISO 3166-1. Inflation rate is defined as the annual percent change in consumer prices compared with the previous year's consumer prices. Inflation is a positive value ...
Evolutionary theory has many applications in medicine. Many human diseases are not static phenomena, but capable of evolution. Viruses, bacteria, fungi and cancers evolve to be resistant to host immune defences, as well as to pharmaceutical drugs. [245] [246] [247] These same problems occur in agriculture with pesticide [248] and herbicide [249 ...
Technetium (43 Tc) is one of the two elements with Z < 83 that have no stable isotopes; the other such element is promethium. [2] It is primarily artificial, with only trace quantities existing in nature produced by spontaneous fission (there are an estimated 2.5 × 10 −13 grams of 99 Tc per gram of pitchblende) [3] or neutron capture by molybdenum.