This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: Geology's best tool for establishing absolute geologic time is a. index fossils. b. radiometric ... (Read 103 times)

tuffie

  • Hero Member
  • *****
  • Posts: 534
on: Jul 28, 2018
Geology's best tool for establishing absolute geologic time is
 a. index fossils.
  b. radiometric dating.
  c. the principle of superposition.
  d. the principle of cross-cutting relationships.

Question 2

Starting with a sample of pure parent radionuclide, what would be the ratio of the parent radionuclide to its daughter after two half-lives have elapsed?
 a. 1 to 1
  b. 1 to 2
  c. 1 to 3
  d. 1 to 4


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Ddddd

  • Sr. Member
  • ****
  • Posts: 334
Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

c


tuffie

  • Hero Member
  • *****
  • Posts: 534
Reply #2 on: Jul 28, 2018
Thank you!


Ddddd

  • Sr. Member
  • ****
  • Posts: 334
Reply #3 on: Jul 28, 2018
Always glad to help...


« previous next »
 

Did you know?

About 60% of newborn infants in the United States are jaundiced; that is, they look yellow. Kernicterus is a form of brain damage caused by excessive jaundice. When babies begin to be affected by excessive jaundice and begin to have brain damage, they become excessively lethargic.

Did you know?

Anti-aging claims should not ever be believed. There is no supplement, medication, or any other substance that has been proven to slow or stop the aging process.

Did you know?

Serum cholesterol testing in adults is recommended every 1 to 5 years. People with diabetes and a family history of high cholesterol should be tested even more frequently.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

It is believed that the Incas used anesthesia. Evidence supports the theory that shamans chewed cocoa leaves and drilled holes into the heads of patients (letting evil spirits escape), spitting into the wounds they made. The mixture of cocaine, saliva, and resin numbed the site enough to allow hours of drilling.

Much time and effort occurs between the development of a research idea and the statistical analysis Much time and effort occurs between the development of a research idea and the statistical analysis
Discovering Fossils 16-30 Discovering Fossils 16-30
Time Estimates for Specific Office Procedures Time Estimates for Specific Office Procedures
Body mass index table. Body mass index table.
Aggregates are people who happen to be in the same place at the same time. Aggregates are people who happen to be in the same place at the same time.
Graph showing oral administration of a single-dose drug. The time of onset is 2 hours and the end of ... Graph showing oral administration of a single-dose drug. The time of onset is 2 hours and the end of ...
Video: Ultrasound of a Fetus (Sonogram)

For a complete list of videos, visit our video library