The correct answers are carbon dating. Carbon or radiocarbon dating is a method that uses a mathematical equation and the half-life of decay to determine the exact date of a fossil. Carbon dating is the method that has the determination of the age of an organic matter.
Answer:
It is expensive and not an accurate indicator of soil pH
Explanation:
Soil sample is one of the ways of studying a particular soil in order to know some certain things about it.
- A sample of soil is collected for experimental processes to characterize some of its properties and how useful a soil is for an agricultural undertaking.
- It is not true that soil sampling is expensive and not an accurate indicator of soil pH.
Answer:
At least 17 PCR cycles or 16 PCR cycles
Explanation:
As we know -
In one chain of heating and cooling of polymerase chain reaction (PCR), the strands of DNA gets doubled.
The general mathematical representation of this is
where "n" is the number of PCR cycles.
It is given that DNA strands to be produced is 16 times the original quantity of DNA.
So the PCR cycle must be carried out at least 17 times in order to have DNA strand not less than 16 times the original quantity of DNA
oxygen and carbon CO2
Explanation:
Because oxygen Can throw up and carbon CO2 throw good for all human beings