This topic contains a solution. Click here to go to the answer

Author Question: The last pole reversal occurred ________ years ago and, based on magnetic field decay, we are ... (Read 74 times)

Mollykgkg

  • Hero Member
  • *****
  • Posts: 529
The last pole reversal occurred ________ years ago and, based on magnetic field decay, we are approximately ________ years from entering the next phase.
 
  A) 1 million; 200,000
  B) 20,0000; 50,000
  C) 1,000; 50
  D) 790,000; 1,000

Question 2

The horizon that is commonly called topsoil is the ________ horizon.
 
  A) A
  B) O
  C) E
  D) B
  E) C



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

carlsona147

  • Sr. Member
  • ****
  • Posts: 341
Answer to Question 1

D

Answer to Question 2

A




Mollykgkg

  • Member
  • Posts: 529
Reply 2 on: Jul 14, 2018
Wow, this really help


Joy Chen

  • Member
  • Posts: 354
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

 

Did you know?

The first successful kidney transplant was performed in 1954 and occurred in Boston. A kidney from an identical twin was transplanted into his dying brother's body and was not rejected because it did not appear foreign to his body.

Did you know?

The eye muscles are the most active muscles in the whole body. The external muscles that move the eyes are the strongest muscles in the human body for the job they have to do. They are 100 times more powerful than they need to be.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

To maintain good kidney function, you should drink at least 3 quarts of water daily. Water dilutes urine and helps prevent concentrations of salts and minerals that can lead to kidney stone formation. Chronic dehydration is a major contributor to the development of kidney stones.

For a complete list of videos, visit our video library