Carbon 12

Most of the carbon in the atmosphere’s carbon dioxide is carbon-12, which is not radioactive. ❋ RICHARD DAWKINS (2009)

And the ratio of carbon-12 to carbon-14 can be used to calculate the time that has elapsed since the death of the creature cut it off from the food chain and its interchange with the atmosphere. ❋ RICHARD DAWKINS (2009)

Eventually it will be all carbon-12 – or, more strictly, the carbon-14 content will become too small to measure. ❋ RICHARD DAWKINS (2009)

So plants take in carbon-14 alongside carbon-12, and incorporate the two kinds of carbon atom in sugars, in the same proportion as they exist in the atmosphere. ❋ RICHARD DAWKINS (2009)

The ratio of carbon-14 to carbon-12 in the specimen therefore gradually drops further and further below the standard ratio that living creatures share with the atmosphere. ❋ RICHARD DAWKINS (2009)

The strongest evidence comes from measurements of the isotopic signature of carbon dioxide -- the amount of carbon-12, -13, and -14 in the atmosphere. ❋ Unknown (2009)

And Prototaxites displayed a much wider variation in its ratio of carbon-12 to carbon-13 content than would be expected in any plant. ❋ Unknown (2007)

Dr. Robert Holloway, whose heading to his article reveals his agenda immediately, quotes someone called Major a creationist: Modern radiocarbon dating assumes that the carbon-14/carbon-12 ratio in living organisms is the same now as it was in ancient organisms before they died. ❋ Unknown (2009)

Deriving their energy from the sun and their carbon from carbon dioxide in the air, any given type of plant will typically contain a similar ratio of carbon-12 to carbon-13 as another plant of the same type. ❋ Unknown (2007)

Alpha particles from the decay cause a release of neutrons from the beryllium as it turns to carbon-12. ❋ Unknown (2009)

In 1961 the International Union of Pure and Applied Chemistry adopted the isotope carbon-12 as the basis for atomic weights. ❋ Unknown (2008)

There is also an alpha-neutron reaction that gives a neutron and carbon-12. ❋ James Killus (2008)

Physicists and chemists have ever since agreed to assign the value 12, exactly, to the "atomic weight," correctly the relative atomic mass, of the isotope of carbon with mass number 12 (carbon-12, 12C). ❋ Unknown (2007)