« previous next »

Author Question: Approximately how old are the erosion channels seen on the surface of Mars? A) 3 billion years ... (Read 14 times)

saliriagwu

  • Hero Member
  • *****
  • Posts: 537
on: Jul 27, 2018
Approximately how old are the erosion channels seen on the surface of Mars?
 
  A) 3 billion years
  B) 4.6 billion years
  C) 1 billion years
  D) 500 million years

Question 2

How many forces operated in the universe during the GUT era?
 
  A) one, what we call the super force
  B) two, gravity and the GUT force
  C) two, gravity and the electroweak force
  D) three, gravity, the strong force, and the electroweak force
  E) all of the above forces


pami445

  • Sr. Member
  • ****
  • Posts: 303
Reply #1 on: Jul 27, 2018
Answer to Question 1

A

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Historic treatments for rheumatoid arthritis have included gold salts, acupuncture, a diet consisting of apples or rhubarb, nutmeg, nettles, bee venom, bracelets made of copper, prayer, rest, tooth extractions, fasting, honey, vitamins, insulin, snow collected on Christmas, magnets, and electric convulsion therapy.

Did you know?

After a vasectomy, it takes about 12 ejaculations to clear out sperm that were already beyond the blocked area.

Did you know?

Though the United States has largely rejected the metric system, it is used for currency, as in 100 pennies = 1 dollar. Previously, the British currency system was used, with measurements such as 12 pence to the shilling, and 20 shillings to the pound.

Did you know?

The Centers for Disease Control and Prevention (CDC) was originally known as the Communicable Disease Center, which was formed to fight malaria. It was originally headquartered in Atlanta, Georgia, since the Southern states faced the worst threat from malaria.

Did you know?

Ether was used widely for surgeries but became less popular because of its flammability and its tendency to cause vomiting. In England, it was quickly replaced by chloroform, but this agent caused many deaths and lost popularity.

Juglans nigra (Black Walnut tree) lower leaf surface Juglans nigra (Black Walnut tree) lower leaf surface
Ion Channels Ion Channels
“Mission Accomplished” proclaimed the banner on the USS Abraham Lincoln, where on May 1, 2003, Presi “Mission Accomplished” proclaimed the banner on the USS Abraham Lincoln, where on May 1, 2003, Presi
Common skin signs are often evidence of an illness or disorder. An erosion or ulcer is an eating or ... Common skin signs are often evidence of an illness or disorder. An erosion or ulcer is an eating or ...
Airflow Associated with Surface Cyclones and Anticyclones Airflow Associated with Surface Cyclones and Anticyclones
Patients Older than 60 Years of Age Patients Older than 60 Years of Age
Video: Rods and Cones Animation

For a complete list of videos, visit our video library