Author Question: What is the importance of cyanobacteria for our atmosphere? What did they produce and how? What ... (Read 98 times)

audie

  • Hero Member
  • *****
  • Posts: 532
What is the importance of cyanobacteria for our atmosphere? What did they produce and how? What happened to the first materials they produced?
 
  What will be an ideal response?

Question 2

Put the steps of formation of the early solar system in order from oldest to youngest. (Note: First refers to the oldest event and Fifth refers to the youngest.)
 
  A) Rapid expansion of compact, dense mass to create matter and space.
  B) Accretion of bodies to create protoplanets.
  C) Formation and rotation of solar nebula.
  D) Contraction of gases and start of nuclear fusion in the first stars.
  E) Accretion of rocky debris creates planetesimals.
 
  1) First
  2) Second
  3) Third
  4) Fourth
  5) Fifth



janeli1

  • Sr. Member
  • ****
  • Posts: 330
Answer to Question 1

Answer: Cyanobacteria were one of the earliest known life forms on Earth and were responsible for producing oxygen in the atmosphere through photosynthesis. The first oxygen products they produced were removed from the atmosphere by bonding with iron in the ocean, creating the banded iron formations. This process ended approximately 2.5 billion years ago with the Great Oxygenation Event.

Answer to Question 2

Answers: 1) A 2) D 3) C 4) E 5) B



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Did you know?

Adults are resistant to the bacterium that causes Botulism. These bacteria thrive in honey – therefore, honey should never be given to infants since their immune systems are not yet resistant.

Did you know?

Coca-Cola originally used coca leaves and caffeine from the African kola nut. It was advertised as a therapeutic agent and "pickerupper." Eventually, its formulation was changed, and the coca leaves were removed because of the effects of regulation on cocaine-related products.

Did you know?

Drying your hands with a paper towel will reduce the bacterial count on your hands by 45–60%.

For a complete list of videos, visit our video library