Vitamins are organic substances because you get your vitamin D from the sun and the sun is not artificial is it. So that is false
It increases because the higher you go in the food chain, the bigger the carnivores or consumers are.
it's very practical, because it's on base 10, so conversion between stuff like meters to kilometer is always just a multiplication with 10 to some power
like 1 km = 1000m (10³m)
or 1 m = 10^-3km = 0.001km
same reason for other SI units.
except time, that's base 60, or 12, or 24. that's more complicated, but there isn't any real competition
Many scientists agree that the universe is about 13 billion years old.
Gyri form the top of the ridges, while sulci form the " valley" of the ridges.
