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:
b
Explanation:
b Should be the answer coz it's mostly Nigerians
Answer:
Its economy runs on recycling and reusing waste. With the amount of money they earn from each industry, it goes to show how much companies could benefit from sustainable waste management systems. ... With 15,000 factories dedicated to recycling and sorting Mumbai's waste, Dharavi employs 250,000 people just for this.
Explanation:
C. Russia became a major exporter of grain after 2001 occurred after the global financial crisis in 1998
