Answer:
4
Explanation:
Pretty sure it's right, have good day <3
Answer:
A Magma Chamber
Explanation:
Got it right on Edge 2020
I believe the correct answer from the choices listed above is the second option. The South China Sea stretches from Singapore to the Strait of Taiwan. The South China Sea<span> is a marginal </span>sea<span> that is part of the Pacific Ocean, encompassing an area from the Karimata and Malacca </span>Straits<span> to the </span><span>Strait of Taiwan.</span>
Answer:
potassium-argon dating
Explanation:
Potassium-argon (K-Ar) dating technique is the most appropriate dating method for establishing the age of a volcanic ash. It is most applicable for dating minerals and rocks more than 100,000 years old. It is based on measuring the product of the radioactive decay of an isotope of potassium (k) into argon (Ar). Since potassium is a common element found in many volcanic ash layer, the time since re-crystallization is calculated by measuring the ratio of the amount of argon 40 (Ar-40) accumulated to the amount of potassium 40 (K-40) remaining in these volcanic ashes.
A) China 1.4 billion (India had 1.3 billion)
