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.
The answer is C
Step by step explanation:
When you have a higher income you tend to pay higher tax rates at upper levels of income....
Answer:
Your backyard is an ecosystem, Producers return nutrients to the soil, and The sun is the primary source of energy in an ecosystem.
Explanation:
this is the most common answers i could find
Technological advancements have had impacts on agriculture becoming industrialized. New machines make farming much easier and more efficient.
