Answer:
D) the steady, clocklike decay of certain radioactive isotopes over time.
Explanation:
Geologists use radiometric dating to estimate how long ago rocks formed, and to infer the ages of fossils contained within those rocks.
For example, when rocks are formed, such as igneous rocks (formed when molten rocks cools), certain radioactive atoms are trapped inside the rocks during this formation process. Then these radioactive atoms decay over time.
The age of the rock can be estimated by comparing the occurring radioactive isotope within the material to the abundance of its decay products, which form at a known constant rate of decay.
From the options;
A) this is about the formation of the radioactive molecules and not about radiometric dating
B) this is radiocarbon dating (cabon dating/carbon-14 dating)
C) the <em>assumption </em>is wrong since the radioactive isotopes decays not accumulate.
D) the corect option as I explained earlier.
Answer:
About 20% of the people of Camboida were killed in the space of about five years. In particular, the Khmer Rouge targeted those who stood out as successful in business or academic pursuits. This action deprived the country of some of its most elite talent. It will take a few generations for the country to recover from such a loss. In addition, the resistance movement of the Khmer Rouge persisted in the jungles until the late 1990s, instilling a sense of terror and uncertainty in the population at large that still impacts people today. People feared that a new reign of Khmer Rouge power could once again target those with religious beliefs, economic knowledge, or intellectual goals. A current effort is under way to put on trial the people responsible for the killing. The goal of such trials is to demonstrate to the people of Camboia and the world that the nation is ready to move on from the devastation of the past.
Explanation:
Plato/Edmentum Users! this is the exact answer to the question, feel free to reword it as you may like
<span>a. it provides freshwater for cooking and gardening</span>
The greatest is coal and then the second greatest is oil
