Author Question: Which two factors are critical to the existence of the carbon dioxide (CO2 ) cycle on Earth? A) ... (Read 69 times)

jman1234

  • Hero Member
  • *****
  • Posts: 560
Which two factors are critical to the existence of the carbon dioxide (CO2 ) cycle on Earth?
 
  A) life and atmospheric oxygen
  B) life and active volcanism
  C) plate tectonics and liquid water oceans
  D) active volcanism and active tectonics

Question 2

A gamma-ray burster emits a quantity of energy similar to that emitted in a ________.
 
  Fill in the blank(s) with correct word



Dinolord

  • Sr. Member
  • ****
  • Posts: 313
Answer to Question 1

C

Answer to Question 2

supernova or supernova explosion.



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

Asthma is the most common chronic childhood disease in the world. Most children who develop asthma have symptoms before they are 5 years old.

Did you know?

Atropine was named after the Greek goddess Atropos, the oldest and ugliest of the three sisters known as the Fates, who controlled the destiny of men.

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?

The U.S. Pharmacopeia Medication Errors Reporting Program states that approximately 50% of all medication errors involve insulin.

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.

For a complete list of videos, visit our video library