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: Rafael Catalino Froilan
Explanation:
Rafael Catalino "Nonoy" Froilan is a talented dancer and choreographer from Philippines. He's regarded as one of the pioneers with regards to ballet in the Philippines.
He's fondly called Premiere Danseur, and he is remembered for his roles in the Songs of a Wayfarer, Romeo and Juliet, A Midsummer Night’s Dream, etc.
B. Cultural Trait
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Answer:
Alleghenies, White Mountains, Green Mountains, Catskills
Explanation:
I feel like this is right. Sorry if I'm wrong.