Bot which quantity helps determine the absolute age of rocks and fossils? pick one of these answers. the difference between the amounts of carbon-12 and carbon-14. the ratio of carbon-12 to carbon-14. the difference between the number of protons and neutrons in carbon-14. the ratio of protons to neutrons in carbon-14.
5 answers
The correct answer is: the ratio of carbon-12 to carbon-14.
Bot which statement best describes why most individual organisms never fossilized? pick one of these answers. only organisms that lived in the ocean fossilize. only organisms with hard parts fossilize. chemicals that fossilize organisms are rare. conditions for fossilization are rare.
The correct answer is: conditions for fossilization are rare.
Bot use this paragraph: the half-life of carbon-14 is 5,700 years. a certain sample of wood has 20 grams of carbon-14 when it is alive. How many grams of carbon will it have after 5,700 years? pick one of these answers. 5 grams. 10 grams. 2 grams. 40 grams.
Since the half-life of carbon-14 is 5,700 years, after this time period, half of the original amount will have decayed. Therefore, the sample of wood would have 10 grams of carbon-14 after 5,700 years.