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

Author Question: Briefly explain why it is often difficult to assign a reliable numerical date to a sample of ... (Read 83 times)

moongchi

  • Hero Member
  • *****
  • Posts: 516
on: Jul 14, 2018
Briefly explain why it is often difficult to assign a reliable numerical date to a sample of sedimentary rock.
 
  What will be an ideal response?

Question 2

How does the area of Earth's surface covered by oceans compare with the area covered by continents?
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

meltdown117

  • Sr. Member
  • ****
  • Posts: 326
Reply #1 on: Jul 14, 2018
Answer to Question 1

A sedimentary rock may include particles that contain radioactive isotopes, but the rock's age cannot be accurately determined because the grains that make up the rock are not the same age as the rock in which they occur. Rather, the sediments have been weathered from rocks of diverse ages.

Answer to Question 2

About 71 of Earth's surface is covered in oceans, compared to the remainder covered in continents.


moongchi

  • Member
  • Posts: 516
Reply 2 on: Jul 14, 2018
Gracias!

shailee

  • Member
  • Posts: 392
Reply 3 on: Yesterday
Great answer, keep it coming :)

« previous next »
 

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Dogs have been used in studies to detect various cancers in human subjects. They have been trained to sniff breath samples from humans that were collected by having them breathe into special tubes. These people included 55 lung cancer patients, 31 breast cancer patients, and 83 cancer-free patients. The dogs detected 54 of the 55 lung cancer patients as having cancer, detected 28 of the 31 breast cancer patients, and gave only three false-positive results (detecting cancer in people who didn't have it).

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

Did you know?

Carbamazepine can interfere with the results of home pregnancy tests. If you are taking carbamazepine, do not try to test for pregnancy at home.

Did you know?

Fatal fungal infections may be able to resist newer antifungal drugs. Globally, fungal infections are often fatal due to the lack of access to multiple antifungals, which may be required to be utilized in combination. Single antifungals may not be enough to stop a fungal infection from causing the death of a patient.

Sample hypoglycemic protocol. Sample hypoglycemic protocol.
Ethnic Differences in Financial Support for College Based on a sample of 304 emerging adults aged 2 Ethnic Differences in Financial Support for College Based on a sample of 304 emerging adults aged 2
Sample Exercise Prescription for Weight Training: Beginner Sample Exercise Prescription for Weight Training: Beginner
A sample encounter form. A sample encounter form.
Sample Teaching Plan for Hypertension Cont. Sample Teaching Plan for Hypertension Cont.
Explain the assumptions that must be satisfied in order to validly use the one-way ANOVA ... Explain the assumptions that must be satisfied in order to validly use the one-way ANOVA ...
Video: Major Elements in Biological Molecules: Proteins

For a complete list of videos, visit our video library