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
olga2289 [7]
2 years ago
11

Scientists infer that oxygen first began to enter the Earth's atmosphere after the appearance of

History
1 answer:
Vinil7 [7]2 years ago
5 0

Oxygen entered the Earth's atmosphere after the appearance of the Great Oxidation Event (Great Oxygenation Event). The Great Oxidation is the first mass extinction on Earth.

The Great Oxidation lasted 2.4 to 2.0 billion years ago.

Oxygen appeared on Earth thanks to cyanobacteria using photosynthesis.

You might be interested in
“The ground, for acres, was a thinly wooded slope--and among the trees on the leaves and grass, were laid the wounded who were p
Rus_ich [418]

Answer:

Explanation:

Whats the answer??

3 0
3 years ago
Read 2 more answers
NEED HELP! I need to Wright a short paragraph describing the work of Ida b. Wells
fredd [130]

Ida Bell Wells-Barnett, more commonly known as Ida B. Wells, was an African-American investigative journalist, educator, and an early leader in the Civil Rights Movement. She was one of the founders of the National Association for the Advancement of Colored People.



4 0
3 years ago
Explain why the Mitzvot are important for Jewish people
dybincka [34]

Answer: The mitzvot was importantt to the jewish people because The mitzvot are Jewish laws, There are 613 mitzvot in the Torah and they guide Jews on how to live a good life.

Hope this helps have a good day :)

7 0
2 years ago
What did slave trades in west Africa and east Africa have
galben [10]

Answer: Slaves from West Africa were generally sold in African and European countries, while slaves from East Africa were generally sold in Persia and Mesopotamia. neither system of trade involved shipping slaves to the Americas.

Hope this helps... Stay safe and have a great weekend!!! :D

5 0
3 years ago
Cold War <br><br> Did the Great Society programs fulfil their promise?
ryzh [129]

Answer:

Yes because they got us out of debt. They also purified most of the racial segregation. Men in war thought that African Americans were being unfairly drawn sometimes.

Explanation:

7 0
3 years ago
Other questions:
  • During the early 1980s, conservatives objected to what they believed were excesses in
    7·1 answer
  • As new discoveries and economic opportunities became available in the Renaissance, the kings and queens of Europe began to inves
    11·1 answer
  • What are the four main goals of American foreign policy?
    5·1 answer
  • How were the changes that took place in russia as a result of world war i different from those that took place in western europe
    7·2 answers
  • One policy established by Mikhail Gorbachev was called glasnost. This can best be described as the policy of industrializing the
    14·2 answers
  • How does migration and culture relates? Explain in complete sentences. 40 points answe quiq under 4 minuets
    10·1 answer
  • How did the Cuban Missile Crisis display the policy of brinkmanship?
    10·1 answer
  • Only one answer this time
    10·1 answer
  • Who is Switzerland's biggest trading partner?
    9·1 answer
  • Discuss and explain the Counterculture.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!