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 95 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?

The newest statin drug, rosuvastatin, has been called a superstatin because it appears to reduce LDL cholesterol to a greater degree than the other approved statin drugs.

Did you know?

Bacteria have been found alive in a lake buried one half mile under ice in Antarctica.

Did you know?

Cocaine was isolated in 1860 and first used as a local anesthetic in 1884. Its first clinical use was by Sigmund Freud to wean a patient from morphine addiction. The fictional character Sherlock Holmes was supposed to be addicted to cocaine by injection.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

Though Candida and Aspergillus species are the most common fungal pathogens causing invasive fungal disease in the immunocompromised, infections due to previously uncommon hyaline and dematiaceous filamentous fungi are occurring more often today. Rare fungal infections, once accurately diagnosed, may require surgical debridement, immunotherapy, and newer antifungals used singly or in combination with older antifungals, on a case-by-case basis.

Nerves can transmit many signals at the same time Nerves can transmit many signals at the same time
Single-dose drug administration: pharmacokinetic values for this drug are as follows: onset of actio Single-dose drug administration: pharmacokinetic values for this drug are as follows: onset of actio
Therapeutic index: (a) drug X has a therapeutic index of 4; (b) drug Z has a therapeutic index of 2 Therapeutic index: (a) drug X has a therapeutic index of 4; (b) drug Z has a therapeutic index of 2
Organizational Effects of Testosterone Around the time of birth, testosterone masculinizes and defem Organizational Effects of Testosterone Around the time of birth, testosterone masculinizes and defem
The Gender Pay Gap Over Time: What Percentage of Men's Income Do Women Earn? The Gender Pay Gap Over Time: What Percentage of Men's Income Do Women Earn?
Different time courses of hypersensitivity reactions. Different time courses of hypersensitivity reactions.
Video: Secondary and tertiary levels of protein structure Animation

For a complete list of videos, visit our video library