Answer:
Nenets Autonomous Okrug
Explanation:
I would choose Nenets Autonomous Okrug, because it has an oil-rich region. And where I live, we use a lot of oil, so I think it would be good to trade with Nenets Autonomous Okrug to get more oil for my country.
Answer:
Radiometric dating
Explanation: Radiometric dating is a precise method of determining the age of archeological artifacts and rocks, it usually makes use of certain radio isotopes of Uranium-235,Rubidiun-87 etc.
Radiometric dating which is also known as radioactive dating is carried out by comparing the naturally occurring radioactive materials of the artifact or rock under study to product of its decay process.
Craters dating is a random process so its reliability can not be guaranteed.
Rainfall and temperature can affect the rate in which rocks weather. High temperatures and greater rainfall increase the rate of chemical weathering. Minerals in a rock buried in soil will therefore break down more rapidly than minerals in a rock that is exposed to air.
hope this helps!! :)