Answer:
Superposition
Explanation:
Superposition. The law of superposition states that a sedimentary rock layer in a tectonically undisturbed sequence is younger than the one beneath it and older than the one above it.
The correct answers should be to make the supplies necessary for war. The goal of it was high quality and high quantity production and allocation of goods and materials necessary for the war. This included fuel as well. It was founded in 1942, a few years before the war ended and was certainly helpful for the war effort.
Answer:
C) X=100%; Y=0%
B) X=50%; Y=50%
Explanation:
The oldest rocks on Earth are about four billion years old. When a rock forms, it contains unstable isotope and no daughter isotopes, so every rock will contain 100% parent isotope and 0% daughter isotope.
The half-life of the radioactive isotope Of this particular rock is 5730 years. The half-life is an amount of time needed for half of the parent isotope (50%) to become a daughter isotope. In this case, after 5730 years, half of the initial parent isotope will transform to daughter isotope, which means that after 5730 years, there will be 50-50 of the parent and daughter istotopes presented in the rock. After two half-lives, there will be only 25% of the parent isotope remaining (that’s half of the previous 50% which remained after first half-life), and after three half-lives, there will be only 12,5% of the parent isotope remaining and so on.
Anything is possible in Russia. Scott and Justin meet up with their friend Bogdan and visit the last man living in the radioactive zone in Chernobyl. They visit St. Petersburg for some homemade vodka and to celebrate Bogdan's birthday, before hopping on an overnight train to Moscow.
