The term isotope is formed from the Greek roots isos (ἴσος "equal") and topos (τόπος "place"), meaning "the same place"; thus, the meaning behind the name is that different isotopes of a single element occupy the same position on the periodic table. All isotopes of a given element have the same number of protons in each atom.that involves isolating, describing, and structuring data, usually by typological classification, along with chronological, functional, technological, and constituent determinations.The research involves artifactual and nonartifactual data. From left to right, the isotopes are protium ( Isotopes are variants of a particular chemical element which differ in neutron number.
Species adapt when succeeding generations emphasize beneficial characteristics.
Peaks on the landscape correspond to genotypic frequencies at which the average fitness is high, valleys to genotypic frequencies at which the average fitness is low. adaptive logic: A behavior has adaptive logic if it tends to increase the number of offspring that an individual contributes to the next and following generations.
If such a behavior is even partly genetically determined, it will tend to become widespread in the population.
However, rocks and other objects in nature do not give off such obvious clues about how long they have been around.
So, we rely on radiometric dating to calculate their ages.