To use radioactive dating far a substance you must know the substance

Embryos of different species look very similar, which shows that the organisms share a ancestor.

Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.

The energy that powers a hurricane is derived from