Well, when it was originally formed, the function of the secret police in soviet union was to investigate counter revolutionary crimes. After the reign of Joseph stalin, the secret police gained punitive power and renamed into People commisariat of internal affairs.
Answer: what does the excerpt say? You forgot to post a pic
To establish the age of a rock or a fossil, researchers use some type of clock to determine the date it was formed. Geologists commonly use radiometric dating methods, based on the natural radioactive decay of certain elements such as potassium and carbon, as reliable clocks to date ancient events
