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.
Answer:
2 is in southwestern China.
Explanation:
The highlands of East Asia are found, in particular, in the southwest of China and present a strong temperature variation due to the variability of the altitude and the latitude of this region, where the places with the highest altitude have a colder climate, as well as the places that have more northern latitude.
When ultraviolet light waves strike CFC molecules in the upper atmosphere, a carbon chlorine bond breaks, producing a chlorine atom. The chlorine atom then reacts with an ozone molecule breaking it apart and so destroying the ozone
Answer:
It is the set of research technology transfer initiatives occurring between 1950 and the late 1960s, that increased agricultural production worldwide
The ocean currents are warm as only warm currents influence the waters to be warm.The atmosphere gets heated
