Radiometric dating practice problems with answers

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The 6 proton 6 neutron atoms are said to have a mass of 12 and are referred to as "carbon-12." The nuclei of the remaining one percent of carbon atoms contain not six but either seven or eight neutrons in addition to the standard six protons.They have masses of 13 and 14 respectively and are referred to as "carbon-13" and "carbon-14." If two atoms have equal numbers of protons but differing numbers of neutrons, one is said to be an "isotope" of the other.In assortative mating, individuals tend to choose mates similar to themselves; for example, large blister beetles tend to choose mates of large size and small blister beetles tend to choose small mates.Though this does not alter allelic frequencies, it results in fewer heterozygous individuals than you would expect in a population where mating is random.El Niño is characterized by the movement of warm waters to the eastern equatorial Pacific Ocean, which often influences water temperatures off California.The same climate phenomenon also directs warm marine air toward West Antarctica. Ideally, justice is ethical, and one assumes that doing what is ethical is legal.Justice cares about people’s rights, and righting wrongs when those rights are violated.

The science team conducting the ARM West Antarctic Radiation Experiment (AWARE) led by researchers at Scripps Institution of Oceanography at the University of California San Diego reports that the melting caused by warm air bearing moisture and extensive cloud cover was likely delivered by El Niño over the ice sheet.Although Cain denied being his “brother’s keeper,” we expect ethical standards and administered justice to function as a “brother’s keeper” to someone (especially ourselves).Justice can be restorative (compensatory), requiring the wrongdoer to restore the innocent victim, to the extent possible, to the same (or a similar) condition the victim was in before the wrong was committed (such as paying to repair damaged property, paying hospital bills, returning stolen goods, etc.).It is fine to hypothesize that similarities between different creatures are the result of common ancestry, but since such similarities have been and are often conflicting when compared with other features, it might be prudent to hold back a little when making conclusions about any sort of definite taxonomic classification model or even relationship.The conclusions that are drawn from the evidence are often and have often been very much exaggerated to fit personal beliefs and biases.

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