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
"We must wait ever vigilant, applying pressure when needed and make sure every move made by the USSR is met with a counter move.
Fiesta28 [93]

Answer:

The containment policy pursued by the United States.

Explanation:

The containment policy pursued by the United States was policy utilized by the United States between 147 to 1989.

It was direct and indirect policy towards the prevention of the spreading of the communist style of government by the USSR (Union of Soviet Socialist Republics) towards the areas like Eastern Europe, and Asia.

Hence, the correct answer to the above statement is "The containment policy pursued by the United States."

3 0
3 years ago
Which of these choices is a primary goal of science?
hoa [83]

Answer:

C

Explanation:

3 0
4 years ago
What does 1 hanggang 2 talatang talumpati mean?<br>Give an example.​
makkiz [27]

Answer:

??????????????

Explanation:

7 0
3 years ago
The Federal Aid Highway Act was established to create a better transportation system in the United States during what year?
iris [78.8K]

Answer:

1956

Explanation:

The Federal-Aid Highway Act of 1956. It took several years of wrangling, but a new Federal-Aid Highway Act passed in June 1956. The law authorized the construction of a 41,000-mile network of interstate highways that would span the nation. It also allocated $26 billion to pay for them.

4 0
4 years ago
Why does puerto rico have higher voting rates than the united states?
STatiana [176]
The answer is because the voting day falls in a holiday.

The islands that boast of several Hispanics election's day always falls on a holiday. With more people out of the job place,voter turn out is predominantly high in the island than in the USA.
6 0
4 years ago
Other questions:
  • How many people died in the Whiskey Rebellion? B. 100 C. 1000
    12·2 answers
  • Which did settlers bring to American Indian lands in the West? trade restrictions seeds for new forests new diseases different c
    7·2 answers
  • Of what country the mayans are <br><br> A. México<br> B. Canadá<br> C. Panamá<br> D. France
    7·1 answer
  • Yellow journalism contributed to the start of the
    15·1 answer
  • Which are accurate descriptions of American Enlightenment thinker Benjamin Franklin? Choose all answers that are correct. A. con
    9·2 answers
  • Why would the monasteries be important to the development of europe
    12·1 answer
  • The Reading Progress Check.... Just explain what it wants please
    8·1 answer
  • PLS HELP IF U KNOW HISTORY PLS 25 POINTS PLS HELP
    13·2 answers
  • PLS HELP ASAP pls shs
    11·2 answers
  • Help me please<br> The Interlopers
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!