Answer:
The taiga is a forest of the cold, subarctic region.
Explanation:
Answer: An Important goal of European unification is:
D. creating a common, multicultural society.
Explanation: European unification helps to enhance common benefit like social, economical, financial and cultural development between member countries and also foster the use of a unified valuable currency.
The first blank is Harry Truman, who was President of the United States after FDR.
The second blank is the Soviets, since the Cold War was mainly characterised by the stalemate between the Communist superpower USSR and the democratic superpower US.
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Answer:
Radiometric dating is usually defined as a method that helps in calculating the age of rock depending on the presence of radioactive isotopes and its rate of decay. In order to calculate this, the half-life of the isotope element must be known. This method is commonly used by geologists.
The conditions that are needed to fulfill in order to determine the age of a granitic batholith are as follows-
- The rate at which these materials decay must be a constant
- There should be an exact amount of both the parent as well as the daughter elements.
- Since it is a batholith, so it has formed from the crystallization of magma at a certain depth. So, these granitic rocks must have remained within a closed system, right from the time of its formation.
The various methods of radiometric dating that can be used to date this granitic batholith are-
- Uranium-lead dating- It is an efficient method to date the rocks that are of about 4 to 4.5 billion years.
- Potassium-argon dating- It is also commonly used to date rocks that are about 4 billion years old.
