If an isotope of some element has a half of 300 years about how much of the isotope will be in sample after 300 years

Andesitic rocks have mineral compositions between those of and basaltic rocks. a. conglomerate c. granitic b. metamorphic d. organic select the best answer from the choices provided a b c d i need asap

Penelope studies how the structure and function of the nervous system is related to behavior. she is a psychologist

Isotopes of the same element have differ in their