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
kodGreya [7K]
3 years ago
6

When did the build up of three oxygen create our ozone layer

Geography
1 answer:
Umnica [9.8K]3 years ago
3 0

<u>Answer: </u>

The build-up of three oxygen created our ozone layer around two billion years ago.

<u>Explanation: </u>

  • The ozone layer is a part of the stratosphere which is located right after the troposphere in the atmosphere of the Earth.
  • The ozone gas is made up of the abundance of three oxygen molecules combining with the ultraviolet radiation emitted by the Sun.
  • The development of the ozone layer happened around two billion years ago when the oxygen concentration levels on the planet began to rise slowly and gradually.
You might be interested in
Select all of the answers that apply.
yulyashka [42]
The answer is A. and B.

Let's look into the options one by one:

A. pressure and heat built up in the magma chamber

This is true as the pressure and heat built up is what cause the magma to be pushed out of the chamber through the vent. The higher temperature it is,the more it expands and the more likely it is to erupt.

B. plate tectonics and subduction

This is also true as volcanicity is caused by plate tectonics such as subduction. When the plate bends, cracks are formed which coul then be filled by magma and cause fissure eruption, afterwards forming volcanoes.

C. ground swelling and foreshocks

These are the consequences of volcanic eruption but not the causes and therefore is not true.

D. foreshocks and aftershocks

These are as well the consequences of volcanic activity like above and is not true.

Therefore the answers are A. and B.

Hope it helps!
5 0
3 years ago
Please help me with this question ( ´Д`)y━・~~
Zigmanuir [339]

Answer:

1

Explanation:

The star will appear the largest at position A because it is closest to the star.  

5 0
3 years ago
Difference between windvane and windsock
marysya [2.9K]

Answer:

both show the direction the wind is blowing. wind vanes and windsocks differ in shape.

Explanation:

7 0
3 years ago
Which statement describes the daily motion of the moon?
Artemon [7]
The answer is d i think, let me know if it’s not
4 0
3 years ago
What content is Northeast of Africa?
marishachu [46]

Answer: Asia

I’m assuming you wanted the continent

Explanation:

8 0
3 years ago
Read 2 more answers
Other questions:
  • This natural resource supports the economy of many nations in the region. diamonds oil salt soil
    15·1 answer
  • What is the capital of France?
    5·2 answers
  • What benefit is NOT provided by Africa's rivers
    14·2 answers
  • Que si sivilizacion actual???<br> aiuda
    15·1 answer
  • Hi :) what are the causes of floods + explanation? ^
    6·1 answer
  • An archaeologist studies _____.
    8·2 answers
  • Why does the ring of fire have more volcanoes than anywhere else on earth?
    12·1 answer
  • Answer true or false to the question...
    12·1 answer
  • How many people are in Chelsea fc and name them​
    8·1 answer
  • The architecture of Europe is many centuries old.
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!