What is one problem with using the half-life of carbon to determine the age of a fossil?

co2reflects heat radiation back to earth buning coal and oil emits co2 globe warms

igneous rocks also form where plates converge. the subducting plate melts as it sinks into the crust of the earth, and the melt rises into the overriding plate forming volcanoes. metamorphic rocks are formed mainly in the lithosphere, wherever there is high pressure and high temperature. -woods

i already answered it by 34/s