After two half-lives, there is no longer any of the original radioactive material remaining. Thus, the given statement is true.
A radioactive isotope's half-life is the amount of time it takes for the number of nuclei in a sample to decrease by half. The Phanerozoic eon refers to the whole period of geologic time that preceded the start of the Paleozoic era. The isotope's mass number is unaffected by the emission of a beta particle. There is no longer any of the original radioactive material after two half-lives.
A half-life, or the amount of time it takes for half of a substance to decay radioactively, is what distinguishes natural radioactive processes. It is simple to determine how much material remains after a specific number of half-lives. For instance, the six-hour half-life of the aforementioned technetium-99m indicates that starting at 100 percent, after six hours, we can no longer detect it.
Learn more about radioactive isotopes, here:
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Answer:
true
After two half-lives, there is no longer any of the original radioactive material remaining.
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Answer:
mid-ocean ridges
Explanation:
Seafloor spreading is a process that occurs at mid-ocean ridges, where new oceanic crust is formed through volcanic activity and then gradually moves away from the ridge.
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Answer:
Answer;) mid ocean ridges
Explanation:
B. one foot above sea level
C. below sea level
D. less than ten feet above sea level
Answer: The absolute location is refers to the location which is given exactly and precise location in the globe. In terms of map, the absolute location is refers to the longitude and the latitude on the surface of the earth and it is also known as the Geo-graphical coordinators.
Answer:
Absolute location
Explanation:
Absolute location refers to the coordinate location of a place. In contrast, relative location refers to the location of a place relative to another place.