It is based on a comparison between the observed abundance of a naturally occurring radioactive isotope and its decay products, using known decay rates.
<h3>How are isotopes used in radioactive dating?</h3>
These isotopes decay within the rocks according to their half-life rates, and by choosing the fit minerals and measuring the relative amounts of parent and daughter isotopes in them, the date at which the rock crystallized can be determined.
Thus, It is based on a comparison between the observed abundance of a naturally occurring radioactive isotope.
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Answer:
C
there awasw a mass extinction of dinosaur species at the end of the Mesozoic.
Explanation:
C
Have A Great One!
Answer:
A
Explanation:
A(adenine) form 2 hydrogen bond with T(thymine)
G(guanine) form 3 hydrogen bond with C(cytosine)
The current projects of the Environmental Protection Act is to reduce the carbon footprint in the atmosphere which is responsible for the climate changes.
<u>Explanation:</u>
Environmental protection act is working to reduce greenhouse gases in the year 2020. And its its energy use and the fuel consumption for climate change in the atmosphere.
Environmental protection act is the independent agency of the US federal government for the environmental protectio. It has the responsibility of maintaining and enforcing the national standards under the variety of environmental law.
Answer:
The answer is G
Explanation:
This is because cells cannot just appear out of thin air all cells have to have come from pre-existing cells.
