Answer:
The isotope you would use to date a fossil from paleozioc era is the 47 billion years half-life 87rb as the paleozoic era dates from 540 to 248 million years ago.
Explanation:
Sometimes geologists need to estimate older fossils, like the ones from the paleozoic era which is the oldest of the three eras.
Carbon-14, the radioactive isotope of carbon used in carbon dating has a half-life of 5730 years, so it decays too fast and it is useful to date fossils younger than about 75,000 years.
To date most older fossils and to estimate how long ago rocks formed, geologists use unstable radioactive isotopes of elements, decaying at constant, and this is called radiometric dating, rocksadiometric dating or radioisotope-dating of igneous rocks or ash located above, below or around the fossil vecinity.
Answer:
The nationalist Chinese government under the rule of Chiang Kai-shek.
Explanation:
The nationalist government fled to the island of Taiwan after they got defeated in the Chinese civil war by the communist chinese government under the rule of Mao Zedong.
Answer:
B
. Areas near the equator get more direct sunlight so the temperatures are higher.
Explanation:
At equator, the sun is always over head and hits the surface directly. The surface is no at an angle to the sun.
The insolation here is very great and they received more direct sunlight.
- Due to the high insolation, the temperature is higher than most part of the earth.
- Rainfall levels are also high as rain cloud easily forms here.
- In most equatorial region, both temperature and rainfall is high all year round.