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Consider the following stages in the development of the atmosphere on Earth in the initial stages:
1. Loss of the primordial atmosphere.
2. Hot interior of the Earth contributed to the evolution of the atmosphere.
3. Process of photosynthesis contributed to changing the gases in the atmosphere.
Choose the correct order of evolution:
- a)1, 2, 3
- b)1, 3, 2
- c)2, 1 , 3
- d)2, 3, 1
Correct answer is option 'A'. Can you explain this answer?
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Consider the following stages in the development of the atmosphere on...
- The evolution of the present atmosphere is a three-stage process. During the first stage, the primordial atmosphere disappeared. In the second stage, the evolution of the atmosphere is subsidised by the hot interior of the Earth. In the final stage, the process of photosynthesis in the living world modified the composition of the atmosphere.
- The early atmosphere is believed to have disappeared due to the solar winds. The solar wind affects not only the Earth but also all the terrestrial planets, which were supposed to have lost their primordial atmosphere in the same way.
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Consider the following stages in the development of the atmosphere on...
Loss of the primordial atmosphere:
- In the initial stages, Earth's atmosphere was composed mainly of gases like hydrogen and helium, similar to the primordial atmosphere found in other planets and moons.
- However, due to the low escape velocity of these light gases, they gradually escaped into space, leading to the loss of the primordial atmosphere.
Hot interior of the Earth contributed to the evolution of the atmosphere:
- The Earth's interior was initially extremely hot, with volcanic activity and frequent volcanic eruptions.
- These volcanic activities released large amounts of gases, such as water vapor, carbon dioxide, nitrogen, and methane, into the atmosphere.
- The release of these gases from the Earth's interior contributed to the evolution of the atmosphere by increasing its composition and creating a more diverse range of gases.
Process of photosynthesis contributed to changing the gases in the atmosphere:
- Photosynthesis is the process by which green plants and some bacteria convert sunlight, carbon dioxide, and water into glucose and oxygen.
- The evolution of photosynthetic organisms, particularly cyanobacteria, played a crucial role in changing the composition of Earth's atmosphere.
- These organisms released oxygen as a byproduct of photosynthesis, leading to the gradual increase in atmospheric oxygen levels.
- The increase in oxygen allowed the development of more complex organisms, including those that rely on aerobic respiration.
Correct order of evolution:
The correct order of evolution of the atmosphere in the initial stages is:
1. Loss of the primordial atmosphere - The escape of light gases from Earth's atmosphere.
2. Hot interior of the Earth contributed to the evolution of the atmosphere - Volcanic activities released gases into the atmosphere.
3. Process of photosynthesis contributed to changing the gases in the atmosphere - Oxygen released by photosynthetic organisms increased atmospheric oxygen levels.
Therefore, the correct answer is option 'A' - 1, 2, 3.
- In the initial stages, Earth's atmosphere was composed mainly of gases like hydrogen and helium, similar to the primordial atmosphere found in other planets and moons.
- However, due to the low escape velocity of these light gases, they gradually escaped into space, leading to the loss of the primordial atmosphere.
Hot interior of the Earth contributed to the evolution of the atmosphere:
- The Earth's interior was initially extremely hot, with volcanic activity and frequent volcanic eruptions.
- These volcanic activities released large amounts of gases, such as water vapor, carbon dioxide, nitrogen, and methane, into the atmosphere.
- The release of these gases from the Earth's interior contributed to the evolution of the atmosphere by increasing its composition and creating a more diverse range of gases.
Process of photosynthesis contributed to changing the gases in the atmosphere:
- Photosynthesis is the process by which green plants and some bacteria convert sunlight, carbon dioxide, and water into glucose and oxygen.
- The evolution of photosynthetic organisms, particularly cyanobacteria, played a crucial role in changing the composition of Earth's atmosphere.
- These organisms released oxygen as a byproduct of photosynthesis, leading to the gradual increase in atmospheric oxygen levels.
- The increase in oxygen allowed the development of more complex organisms, including those that rely on aerobic respiration.
Correct order of evolution:
The correct order of evolution of the atmosphere in the initial stages is:
1. Loss of the primordial atmosphere - The escape of light gases from Earth's atmosphere.
2. Hot interior of the Earth contributed to the evolution of the atmosphere - Volcanic activities released gases into the atmosphere.
3. Process of photosynthesis contributed to changing the gases in the atmosphere - Oxygen released by photosynthetic organisms increased atmospheric oxygen levels.
Therefore, the correct answer is option 'A' - 1, 2, 3.
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Consider the following stages in the development of the atmosphere on Earth in the initial stages: 1. Loss of the primordial atmosphere.2. Hot interior of the Earth contributed to the evolution of the atmosphere.3. Process of photosynthesis contributed to changing the gases in the atmosphere.Choose the correct order of evolution: a) 1, 2, 3b) 1, 3, 2c) 2, 1 , 3d) 2, 3, 1Correct answer is option 'A'. Can you explain this answer?
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