Answer:
Historical ties and official cooperation
Explanation:
Argentina took in many Nazi war criminals and members of the Nazi party after World War II in part because of the strong presence of German immigration in the South American country. Argentina had received many Germans in the decades prior to the war which helped the country stay close to Germany.
Argentina was also a neutral country during WWII and therefore had an impartial stance toward the warring parties, at least official. In reality, the Argentine government collaborated secretly with the Germans to help escapees leave Europe safely and reach safe haven in the Americas.
Answer:
B and C
Explanation:
B. In a given rock sample, the amount of Silicon-32 isotopes gets divided in half about every 170yrs.
This is the concept of half-life. Half life is the time take for half of a radioactive isotope to disintegrate. The shorter the half life the faster the isotope disintegrates.
From the question, we were told that it would take 170yrs for half of the isotope of Silicon to disintegrate to Phosphorus. This is the half life.
C. The half life can be used to determine the amount of Si-32 that has decayed from the time closure temperature was reached.
The closure temperature is very important in radioactivity. It is the temperature at which a system has cooled and there is no resulting disintegration of parent and daughter isotopes.
From first order kinetics, we know that the rate at which radioactive elements decay at any time is directly proportional to the number of radioactive atoms present. A knowledge of the half life helps to figure out the number of atoms that has decayed in time.
Answer:
Because of the influence of colonial rule. There is also another reason: to unify all languages.
