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
Liono4ka [1.6K]
3 years ago
11

The earth's first atmosphere (approximately 4.6 billion years ago) was most likely composed of ____.

Geography
2 answers:
Elena-2011 [213]3 years ago
7 0
The answer to this question is explained below:

Tha earth's first atmosphere (approximately 4.6 billion or several billion years ago) was most likely composed of the following;
First, "water vapor"
Second, "Nitrogen"
Third, "Carbon Dioxide" 

Due photosynthesis, the oxygen increase.
Strike441 [17]3 years ago
5 0
4.6 billion years ago - most likely hydrogen (H2) and helium (He)

probably rich in hydrogen compounds like methane (CH4), ammonia (NH3), hydrogen cyanide (HCN), water (H2O), and formaldehyde (HCHO). Also some N2, CO2 but LITTLE or NO free oxygen.

Molecules of H2 and He move really fast, especially when warm, that they eventually all escaped Earth's gravity and drifted off into space.
You might be interested in
How long is the border between mexico and the us?
denis23 [38]
The border stretches 3,145 kilometers
4 0
3 years ago
What was called the dark continent?
nalin [4]
Africa was known as the Dark continent Because a man name Henry Stanley(A United States Explorer and an Journalist) named it because the land was so mysterious <span />
3 0
3 years ago
15. What is the Dominion of Canada? And when was it created?
Evgesh-ka [11]
The Dominion of Canada is the Country's formal title. While it is rarely used, it was first applied to Canada in 1867 at Confederation to describe the status of Canada in the British Empire. 
4 0
3 years ago
Three rivers, the Indus, the Ganges, and the __________________ water the Indo-Gangetic plain. *
wolverine [178]

Answer:

Tigris

Explanation:

Yan kasi nabasa ko na Yan sa module koohh

7 0
3 years ago
Which statement is true?
dsp73
A desert forms when rainfall decreases in a dry climate
6 0
3 years ago
Other questions:
  • Geographically, people in western Russia have tended to identify with Europe more than Asia because
    7·1 answer
  • Which is NOT and example of the system of checks and balances at work?
    9·2 answers
  • Other European countries rely on Norway for hydroelectric power.<br> True OR False
    10·2 answers
  • 100 POINTS, BRAINLIEST, THANKS, AND MORE IF YOU CAN ANSWER THEM ALL!
    7·2 answers
  • One sentence with the word great circle routes
    10·1 answer
  • In your own words, explain how the precise timing of an element's radioactive decay helps scientists find the actual age of a ma
    15·1 answer
  • The planetary surface winds and air currents near earths equator are usually a. converging and sinking
    8·1 answer
  • 17. What's the relationship between the temperature and the density of a substance
    6·2 answers
  • The leaves that grow from the rhizome are called
    11·1 answer
  • What are the smooth, rounded areas of rock that are formed when lava reacts with cold seawater?
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!