“radioactive carbon”造句，怎麼用radioactive carbon造句

Food grains, scraps of cloth, bits of wood and so on can thus be dated by finding out how much radioactive carbon is left in them: the less there is, the older they are.

Drops of a nutrient solution containing radioactive carbon-14 were added to Martian soil, and a stream of radioactive carbon dioxide was detected rising out of the soil.

Using carbon-dating techniques, archaeologists can determine the age of many ancient objects by measurement the amount of radioactive carbon they contain.

A living organism would take in the radioactive carbon and convert it to organic material.

When the organism dies, no new radioactive carbon is assimilated.