0
What is the c-14 c-12 ratio used to date once living organisms?
JeremyVelagp0083
It is because living organisms absorb C14 from their environment. After death, they are no longer capable of absorbing any more C14. So, at the time of death, the C14 : C12 ratio is fixed. C14 undergoes radioactive decay (into C12) so the C14 : C12 ratio declines and that can be used as a measure of the time since death.
Wiki User
∙ 6y ago
menuprice222
Carbon dating is based upon the decay of 14C, a radioactive isotope of carbon with a relatively long half-life (5700 years). While 12C is the most abundant carbon isotope, there is a close to constant ratio of 12C to 14C in the environment, and hence in the molecules, cells, and tissues of living organisms.
Shaheer Haider
the ratio is 1.3 x 10^(-12)
Add your answer:
Earn +20 pts
Are non-living things made up of more than one cell?
animals,plants,mosses and algaes are made up of more than one cell.
Why are organic compounds called organic compounds?
because it was once believed that such compounds could not be synthesized in a lab but could only be produced in living things/organisms because of some "supernatural essence" unique to themorganic compounds are very complex carbon compounds
What does a tullgren funnel do?
The Tullgren Funnel is an apparatus which helps to remove living organisms from leaf litter. Leaf litter is placed in a filter funnel which is covered with black paper. The funnel is then held over a bottle containing a mixture of alcohol and water. There is a piece of gauze present to prevent soil entering the liquid. Once the leaf litter has been placed in the funnel, the apparatus is put under a strong light for at least two weeks. The soil dries out slowly and this encourages the living organisms to move downwards.
What breaks down once living matter into simple energy rich substances?
decomposers
A substance is organic if it did not arise from materials that were once part of a living thing true of false?
true
What are the parts of an organisms environment that are living or once living and interact with the organisms are?
The parts of an organism's enviroment that are living or once living and interact with the organsim are biotic factors. :)
What word describes microbes which gain nutrients from once living organisms?
Fungi and Bacteria that gain nutrients from once living organisms are called decomposers. Organisms that gain nutrients from living organisms is called parasites.
What does unicellular and multicellular have in common?
they where once living organisms
Solidified remains of once-living organisms?
Fossils
Compounds associated with living or once living organisms are known as?
organic compounds
What Compounds associate with living or once living organisms are known?
Organic Compounds
What are the parts of an organisms environment that are the living or once living and interact with the organism?
The parts of an organism's enviroment that are living or once living and interact with the organsim are biotic factors. :)
What happens once food is canned?
It will be free of all living organisms
What are the remains of once living organisms found in sedimentary rock?
fossil
What is an organism that feeds off once living organisms?
scavengers or parasites they can also be called decomposers or the more biological term would be saprophytes
What are energy rich substances formed from the remains of once-living organisms?
Fossil Fuels =)
What takes place in an area with soil that was once the home of living organisms?
secondary succession
