The countries currently on stage 4 of demographic transition model are.. Argentina, Australia, Canada, China, Brazil, Singapore, South Korea, U.S. , and most of Europe.
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: GIS technology and collection of health data.
Explanation:
If a doctor is studying the effects of the diseases in the country he can make use of the geographic data to study the occurrence of the diseases in the past and with the help of the geographic data could analyze it through the use of the Geographic Information System technology that helps to study the areas on the world map that shows similar patterns of infections.
So the use of the technology can help in understanding problems of the disease which are generally related to the most and humid tropics as compared to the cold polar climate that has a different type of diseases and flues etc.
Also the collection of real-time data on the patients the doctor can match the symptoms and help in studying the further root cause of the problems.
Answer:
1, 3, 5
Explanation:
On EDG its the first third and last one
