How is radioactive decay used to determine the absolute age of rocks?

daughter isotopes are compared to sister isotopes.

isotopes of different compounds are compared. < my answer. is this correct?

radioactive substances are compared to non-radioactive substances.

parent isotopes are compared to daughter isotopes.

In what layer of the sun is energy transfers between atoms

Examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. examine the two squirrel populations in the accompanying figure. the populations are separated by a geographic barrier. if after a long period of time the two species are no longer separated, what evidence is needed to determine if speciation has occurred? the figure shows two populations of squirrels separated by a geographic barrier. polyploidy is creating new species. the two populations are not interbreeding freely. hybrid offspring of the two populations begin to appear. one species will increase into a population size twice as large as the other species.

Where can you find prokaryotic and eukaryotic cells?