« previous next »

Author Question: How do scientists measure the age of rocks at mid-ocean ridges? A) radioactive dating methods ... (Read 180 times)

futuristic

  • Hero Member
  • *****
  • Posts: 638
on: Jul 16, 2018
How do scientists measure the age of rocks at mid-ocean ridges?
 
  A) radioactive dating methods
  B) comparison of rock samples on mountain ranges
  C) fossil stratification and the principle of horizontality
  D) magnetic polarity measurements

Question 2

How fast is North America moving away from Africa?
 
  A) 3 cm/year
  B) 3 m/year
  C) 3 mm/year
  D) 3 km/year


Fayaz00962

  • Sr. Member
  • ****
  • Posts: 330
Reply #1 on: Jul 16, 2018
Answer to Question 1

Answer: D

Answer to Question 2

Answer: A


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

futuristic

  • Hero Member
  • *****
  • Posts: 638
Reply #2 on: Jul 16, 2018
TY


Fayaz00962

  • Sr. Member
  • ****
  • Posts: 330
Reply #3 on: Jul 16, 2018
Happy to Help


« previous next »
 

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

Approximately one in four people diagnosed with diabetes will develop foot problems. Of these, about one-third will require lower extremity amputation.

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

Immunoglobulin injections may give short-term protection against, or reduce severity of certain diseases. They help people who have an inherited problem making their own antibodies, or those who are having certain types of cancer treatments.

Teaching methods based on patients developmental capacity Teaching methods based on patients developmental capacity
Other Forecasting Methods Other Forecasting Methods
HLA genotyping by 2 different methods. HLA genotyping by 2 different methods.
Type of rocks Type of rocks
Research Methods Research Methods
In situ hybridization between a radioactive probe In situ hybridization between a radioactive probe
Video: Wound Care

For a complete list of videos, visit our video library