1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
UNO [17]
3 years ago
14

Scientists can determine if oxygen existed in Earth's Archean atmosphere by

History
2 answers:
Taya2010 [7]3 years ago
5 0
Scientists can determine if oxygen existed in Earth’s Archean atmosphere by looking for oxidized iron in rock.  In the beginning, there was only a little to no oxygen in the atmosphere. The oxygen that are being produced by cyanobacteria is only enough for the weathering process. There will only enough oxygen that shall remain in the atmosphere when the rocks at the surface are properly and adequately oxidized.  However, as time goes by, evidences said that the amount of oxygen in the Archean atmosphere is actually increasing in a slow steady pace. 
butalik [34]3 years ago
5 0

Correct answer would  be B

You might be interested in
The secretary of ___ is the newest cabinet post
musickatia [10]

The secretary of treasury is the newest cabinet post.

Hope this helped.

8 0
3 years ago
What was the signal in Boston that the British were traveling the river by boat
Wewaii [24]

Answer:

2. Two lights in the church tower

Explanation:

8 0
3 years ago
Read 2 more answers
Which idea is not an essential element of the English political tradition
brilliants [131]

Royal absolutism is not an essential element of the English political tradition. However, limits to the power of the king, differing levels of representation, and protection of certain rights have been found in English political tradition.

6 0
3 years ago
The climate of India can be described as _________________.
maks197457 [2]
Hot tropical country.
7 0
3 years ago
Read 2 more answers
How did the advertising industry affect the role of the United States in the
lara31 [8.8K]
Advertising created overseas markets by inventing new uses for American products
4 0
4 years ago
Read 2 more answers
Other questions:
  • Why did the Dred Scott VS. Sandford decision anger Northerners?
    10·1 answer
  • What kinds of terrorist threats do us citizens face today?
    6·1 answer
  • During the Reconstruction, which group wanted to punish the Confederate states for seceding from the Union and wanted to make it
    5·2 answers
  • What was an effect of having so many men away from home during world war 2
    5·2 answers
  • Which statement about the Sahara is most closely
    9·1 answer
  • What helps reduce sharp Inflation in Russia after the end of the Soviet Union
    8·1 answer
  • Which territory did the Normans conquer in 1066?
    14·2 answers
  • How are local, state, and federal governments similar in the way they are structured?
    10·2 answers
  • What regions in Europe were part of the Roman Empire?​
    6·1 answer
  • "'A well regulated Militia, being necessary to the security of a free State, the right of the people to keep and beat Arm,shall
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!